Answers
In developed countries , amount of food produced being increased is a positive effect of agricultural changes in the past century.
Agricultural changes in developed countries were set up such as application of fertilizers etc so as to achieve a maximum yield as the increasing population all over the world means increase in food production to cater for individuals and to prevent starvation and death.
Agricultural changes were also done to ensure goods produced have a very high quality.
The remaining options such as Desertification, Clearing of rainforests and contamination can be referred to as part of the negative effect of agricultural changes in the past century.
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Related Questions
The structure that carries urine into the renal pelvis
A. Loop of henle
B. Collecting duct
C. Renal cortex
D. Renal vein
Answers
Answer:
collecting duct
Explanation:
The last part of a long, twisting tube that collects urine from the nephrons (cellular structures in the kidney that filter blood and form urine) and moves it into the renal pelvis and ureters.
I hope this is correct the other ones didn't quite match up.
Animals and plants have certain features which make them to survive in a particular habitat. This is called(a) adaptation (b) speciation (c) specialisation (d) evolution
Answers
Answer:
Adaptation
Explanation:
The presence of specific features, which enable a plant or an animal to live in a particular habitat, is called adaptation.
when animals adapted environment they can survive
hope it helps
why organisms need specialised cells and tissues in order to survive
Answers
the cells get oxygen and nutrients from this extracellular fluid and release waste products into it. Humans and other complex organisms have specialized systems that maintain the internal environment, keeping it steady and able to provide for the needs of the cells.
systems of specialized cells within organisms help them perform the essential functions of life, which involve chemical reactions that take place between different types of molecules, such as water, proteins, carbohydrates, lipids, and nucleic acids. All cells contain genetic information in the form of DNA molecules.
Multicellular organisms require cells to perform various functions and collaborate to maintain a balance in the system known as homeostasis. As a result, specialized structures become specialized for specific functions.
What is cell specialization?Cell specialization, also recognized as cell differentiation, is the methodology by which formulaic cells transform into specific cells that perform specific functions within the body.
Cell specialization is especially important during embryonic development.
Cell specialization allows multicellular organisms to express fewer genes in individual cells, protecting genes from mutagen damage.
Cell specialization occurs primarily during embryonic development as a result of cell signaling of cytoplasmic determinants.
Adult stem cells become specialized to various types of stem cells primarily due to gene expression regulation.
Cells in multicellular organisms must perform a variety of functions and collaborate to maintain a balance in the system known as homeostasis. As a result, specialized structures evolve to perform specific functions.
Thus, the organisms need specialized cells and tissues in order to survive.
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Give three examples of the color changes that can be seen with pH indicators.
Answers
Answer:
IndicatorLow pH colorHigh pH colorBromocresol greenyellowblueMethyl redredyellowMethyl purplepurplegreenAzolitmin (litmus)redblue
Which of the following pairs of organisms
probably belong to the same trophic level?
a. humans and bears
b. bears and deer
C. humans and cows
d. both (a) and (c)
Answers
Both humans and bears are secondary consumers.
Both deer and cows are primary consumers.
Humans and bears probably belong to the same trophic level.
What is the tropic level in ecology?
The tropic level is the position of an organism in the food chain or food in the ecosystem.
There are 4 trophic levels including producers herbivores (primary consumers) carnivores (secondary consumers)predators (tertiary consumers).the organism of one tropic level cal is the part of another chain at a different levels.According to the question:-
a. humans and bears (both are carnivorous and secondary consumers)
b. bears and deer bear is carnivorous and deer is herbivorous)
C. humans and cows (human omnivorous and cow herbivorous.
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Brainlest to correct answer!!!
Answers
Answer:
Photosynthesis
Explanation:
I just learned that today
If you reduced three sponge species down to individual cells using a very fine cloth and mixed them together, what would you predict would be the outcome after a period of time? Make sure to identify why, and what proteins are likely responsible.
Answers
After a few hours, the cells of each sponge would re-aggregate and form three new sponges.
We can reach this answer because:
The sponge is a multicellular organism with little cell differentiation.The surface of sponge cells has a group of glycoproteins, which allow communication between all the cells in a sponge.These proteins are transmembrane receptors, which emit signals responsible for the cell adhesion process.The cell adhesion process allows the cells in a sponge to regroup if they are separated.In this case, if three sponges had their composition sieved and mixed, the glycoproteins of their cells would allow each sponge to be remade, as there would be communication and a regrouping of the cells of each sponge.
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if a red plant is crossed with a white plant and the offspring is pink, what is it called ?
Answers
Answer:
Incomplete dominance is an example of a non-mendelian trait (doesn't follow the genetic rules established by Gregor Mendel). When two parents mate and produce offspring, the offspring is a blend of the two parents. So, a red flower and a white flower would make a pink flower.
A student observes a cell under a microscope. She sees a cell wall and a nucleus. What type of cell is she observing?
O eukaryotic animal cell
O eukaryotic plant cell
O prokaryotic cell
O bacterial cell
Answers
Answer:
eukaryotic plant cell
hope this helps
Only eukaryotic plant cells have a cell wall and a nucleus. Option 2 is correct.
Eukaryotic cells are cells that have a nucleus and other membrane-bound organelles. Prokaryotic cells do not have a nucleus or other membrane-bound organelles.
Plant cells are eukaryotic cells that have a cell wall. The cell wall is a rigid structure that surrounds the cell membrane. It provides support and protection for the cell. Animal cells do not have a cell wall.
The nucleus is the control center of the cell. It contains the DNA, which is the genetic material of the cell. The nucleus also contains proteins that control the activities of the cell.
So, if a student observes a cell under a microscope and sees a cell wall and a nucleus, she is observing a eukaryotic plant cell.
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Would pressure be greater or smaller if you were to go scuba diving? Explain
Answers
It depends on how deep you go, the deeper you go the greater the pressure gets, ._.
If you are scuba diving in a coral reef there is little to no pressure since you are close to the surface, you are at surface floor
12. What is true of a chemical change?
A.
C.
They do not create new substances
It cannot be seen on the molecular
level
B.
It cannot be smelled
D.
The do create new substances
Answers
Answer:
D
Explanation:
many chemical changes can be smelled, or heard, etc. And can be seen on a molecular level. Chemical changes create new substances:
Na + Cl = NaCl
What is the process X?
Answers
Answer:
digestion
Explanation:
since digestion is the breaking down of food particles to smaller sized molecules
Why is mitosis important in living organisms
Answers
Answer:
La célula es la unidad anatómica y fisiológica de todos los seres vivos. Lleva un proceso de división celular denominado mitosis en donde a partir de una célula madre se generan dos células hijas exactamente iguales. ... La mitosis en seres pluricelulares tiene la función de crecimiento y reparación.
Explanation:
Does ATPsynthase store energy or release it?
Answers
Answer:
(Hope this helps can I pls have brainlist (crown)☺️)
Explanation:
ATP synthase is a protein that catalyses the conversion of adenosine diphosphate (ADP) and inorganic phosphate to the energy storage molecule adenosine triphosphate (ATP) (Pi). It's classed as a ligase since it modifies ADP by forming a P-O bond (phosphodiester bond).
Cells store energy in the form of ATP. These storage molecules are made in the mitochondria, which are small organelles present in eukaryotic cells and are commonly referred to as the cell's "powerhouse."
1. Which of the following scenarios would not prompt the cell to start dividing? A. a bone elongating during puberty B. tissue healing after an injury C. stretching of a cell to allow for more fat storage
Answers
Answer:
I think the answer is C
Explanation:
The scenario that would not prompt the cell to start dividing is the stretching of a cell to allow for more fat storage.
What do you mean by Cell division?Cell division may be defined as the process by which a parent cell divides into two or more daughter cells.
The stretching of a cell to allow for more fat storage is usually done by the process of cell growth, but not by the process of cell division.
Therefore, the scenario that would not prompt the cell to start dividing is the stretching of a cell to allow for more fat storage.
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This is the equation for the thermite reaction:
Fe2O3 + 2Al = Al2O3 + 2Fe
You know the charge on the Al and O ions because you know how many electrons each atoms "wants" to give or take by looking at their position on the periodic table (and because it was listed on the cards). Fe is element 26, iron, in the middle of the periodic table. Since it forms Fe2
2
O3
3
, what charge does the Fe ion have?
Answers
The charge of Fe in Fe₂O₃ is +3.
Let's consider the equation for the thermite reaction:
Fe₂O₃ + 2 Al ⇒ Al₂O₃ + 2 Fe
One of the reactants is ferric oxide, we can calculate the charge of Fe in Fe₂O₃ considering that:
The sum of the charges of the atoms is equal to the charge of the compound.The charge of a neutral compound is 0.The charge of O in oxides is -2.The charge of Fe in Fe₂O₃ is:
[tex]2Fe+3O = 0\\2Fe+3(-2)= 0\\Fe=+3[/tex]
The charge of Fe in Fe₂O₃ is +3.
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State six systems work human body
Answers
Answer:
circulatory, respiratory, muscular, digestive, integumentary, endocrine, reproductive, and nervous systems.
Explanation:
hope it helps
pls mark me as brainliest
main disadvantages of rejoining Paris agreement
Answers
Your answer is → There are no repercussions for countries who fail to meet their targets. Without legal ramifications, some countries see their pledges as meaningless, and, therefore, do not prioritise a reduction in carbon emissions
Which of the following household products is potentially hazardous ?
a bleach
b. solvents
c. paint
d. all of the above
Please select the best answer from the choices provided
А
B
С
D
Answers
Answer:
D
Explanation:
Answer:
a
Explanation:
bleach can cause many hazardous circumstances like bleach in the eyes and stain on clothes and it slowly rots away your skin
state the meaning of horizontal growth of a tree
Answers
what is cellular respiration
Answers
Answer: Cellular respiration is a set of metabolic reactions and processes that take place in the cells of organisms to convert chemical energy from oxygen molecules or nutrients into adenosine triphosphate, and then release waste products.
Explanation:
Which two body systems work closely together to make sure your body remains in a stable condition
Answers
The Circulatory system helps in providing impure blood to heart and taking pure blood to cells with hemoglobin.
The respiratory system handles the coming of oxygen to body and out of carbon dioxide from body
Pls help me i only know the answer but I don’t know how to explain it.
Answers
Answer:
just explain
Explanation:
just do it
Looking for input and other opinions with the following statement. 'environmental factors influence the rate of natural selection." I am to make a claim on whether I agree or not and why. I agree with the statement. This is because all literature states that with natural selection it's basically the best man/woman wins. I feel that with that statement it directly refers to the environment if food is scarce then the best hunter the best runner is going to get the food first if the weather is changing and it's time to move on or hibernate then the one with the best intuitions will move on or assume hibernation and wont be left to the cold as well as if they are the prey to something else as everything is the best one to keep alert and observant to their surrounding would be the one to survive longer. Although I think that the only downfall to that would be if something happened and the appearance was to change and made them less desirable in that manner but then would in turn help themselves to camouflage to hide better.
Answers
I agree completely.
Environmental factors control evolution through surivial of the fittest, or natural selection. This is not nearly as much the case with humans as wild animals, or early on humans, but it does still come into play. For example, lactose intolerance was erradicated in areas where milk was a primary source of nutrients during a famine. The famine was environmental, causing natural selection to elimate lactose intolerant people in the area.
A more basic example is fur color of certain animals. They were selected by their environment to survive and pass on their genetics, causing the species to evolve.
2. DNA can be found in (select all that apply):
bacteria
o fungi
o protists
o plants
o animals
Answers
Answer:
Explanation:
Plantae, Animalia, Protista,Fungi
Answer the following questions.
n 1) Plants Impact many things that we take for granted. Our lives are in many ways
Intertwined with theirs. Think about it. Which of the following listed daily events
demonstrates the importance of plants in our daily life? Select all that apply.
having a sandwich for lunch
sitting at wooden desks
I picking wildflowers
eating a favorite breakfast cereal
throwing a granite rock
asking permission to go to recess.
reading paper books and magazines
sleeping in beds under cotton sheets
Answers
Answer: reading paper books and magazines, sleeping in beds under cotton sheets, having a sandwich for lunch , sitting at wooden desks , I picking wildflowers , eating a favorite breakfast cereal.
Explanation: These are all correct because each has to deal with plants. For example, reading the paper books, sleeping in the bed and sitting at the wooden desk all have to due with the products that come from plants. Paper, cotton, and wood are all grown from plants and turned into resources. Next picking flowers, eating foods are also direct examples of how plants help us. Picking flowers that come directly from plants. Then eating food that is grown from plants shows that it is directly plants providing for humans.
What is a nonrenewable resource?(1 point)
a resource that is in limited supply
a resource that is used for energy
a resource that harms the environment when it is used
a resource that can replace itself quickly
Are all rocks made up of one mineral?(1 point)
No. If it contains more minerals, however, then it is not useful to people.
Yes. If it contains more minerals, then it would lose its orderly internal structure.
No. Some rocks may contain several minerals.
Yes. If it contains more minerals, then it is an ore.
Coal is a very useful rock that formed over millions of years from the remains of plants. Is coal a mineral?(1 point)
No, coal is not a mineral because coal is made of dead plants.
No, coal is not a mineral because coal can be burned to produce electricity and heat.
Yes, coal is a mineral because all rocks that are useful to people are minerals.
Yes, coal is a mineral because all rocks are nonliving solid minerals.
Which is a positive aspect of fossil fuels?(1 point)
They are ecologically friendly.
.
They can be recycled and reused.
They provide energy for cars, trains, and heat.
They do not need processing to produce energy.
Which is a negative aspect of fossil fuels?(1 point)
They take a long time to produce energy.
They are difficult to find.
They cause pollution on Earth.
They are difficult to transport.
Which is a disadvantage of solar power?(1 point)
It requires turbines.
It can be harmful to wildlife.
It requires burning fuel, which causes air pollution.
It can only be used where there is lots of sunlight.
Which is a thick, sticky, tar-like deposit of bitumen mixed into sandy sediment?(1 point)
shale
sandstone
oil sand
coal
Which statement best explains an environmental outcome of using fossil fuels for energy?(1 point)
When fossil fuels are burned, hazardous ash is created and carried through the environment by wind and dropped into nearby lakes and ponds.
Fossils fuels produce waste that exposes humans to dangerous levels of radiation.
When fossil fuels are burned, they release toxic gases into the air that cause pollution and increase global warming.
Fossil fuels release carbon dioxide which plants use to make food.
Why is soil considered a vital resource?(1 point)
It is hard to destroy and easy to make.
It provides the source of material for different landforms.
It plays a variety of roles for plants and animals.
It is the place where all nutrients on Earth are stored.
Which describes a renewable energy resource?(1 point)
It is more prone to serious accidents.
It is less expensive than fossil fuels.
It produces less pollutants than fossil fuels.
It consists of carbon and hydrogen molecules.
Use the scenario to answer the question.
Edwin buys a water bottle, reuses it twice, and then recycles it. Eleanor buys a water bottle, reuses it twelve times, and then throws it away.
Which energy cost would apply to Edwin, but not to Eleanor?
(1 point)
the cost of transporting the bottle away from the house
the cost of processing the bottle after it was no longer used
the cost of producing the original bottle
the cost of transporting the bottle to the store
Your class goes on a field trip to observe drilling machinery. The geologists at the drill site show you displays of drilled rocks to compare different types of drills and methods. The drilled holes in one rock display are significantly larger than the holes drilled in the display next to it. Given this information, which statement is correct? (1 point)
The rock display with larger holes shows petroleum drilling, which is deep underground.
The rock display with smaller holes shows petroleum drilling, which is closer to the surface.
The rock display with smaller holes shows copper drilling, which is deep underground.
The rock display with larger holes shows copper drilling, which is closer to the surface.
Answers
Answer:1).A nonrenewable resource is a natural substance that is not replenished with the speed at which it is consumed. It is a finite resource.
2)Rocks are made of minerals, like quartz, calcite, feldspars, and micas. Most rocks are made from more than one mineral, but there are quite a few kinds that are made from only one mineral. Minerals are not rocks, rocks are made of minerals.
3)Coal is a very useful rock that formed over millions of years from the ... No, coal is not a mineral because coal is made of dead plants.
4)The relatively cheap cost of fossil fuels is a major positive aspect. They are in abundant supply, which makes them inexpensive to drill or mine for. In particular, coal is one of the most widely available fossil fuels.
5)High initial costs for material and installation and long ROI (however, with the reduction in the cost of solar over the last 10 years, solar is becoming more cost feasible every day) Needs lots of space as efficiency is not 100% yet. No solar power at night so there is a need for a large battery bank.
6)Asphalt, also known as bitumen is a sticky, black, highly viscous liquid or semi-solid form of petroleum. It may be found in natural deposits or it may not.
7)When fossil fuels are burned, they release toxic gases into the air that cause pollution and increase global warming.
8)The soil considered an important resources because : It provides food through agriculture. It is the source of nutrients for many forms of life. Many valuable minerals are explored from the soil.
9)Renewable resources are an energy source that cannot be depleted and are able to supply a continuous source of clean energy.
10)the cost of processing the bottle after it was no longer used
11)The rock display with smaller holes shows copper drilling, which is deep underground.
Explanation:
Those resources which can not be made again is called nonrenewable resource.
According to the question,
A resource that is in limited supply is nonrenewable resources.A resource that is used for energy is a renewable resource. For example - sunlight.A resource that harms the environment when it is used, might be both renewable and nonrenewable resources.A resource that can replace itself quickly is renewable resources. Asphalt, also known as bitumen is sticky, it is present in all rock7When fossil fuels are burned, they release toxic gases into the air that cause pollution and increase global warming. The soil considered an important resource because It provides food through agriculture. It is the source of nutrients for many forms of life. Many valuable minerals are explored from the soil. Renewable resources are energy sources that cannot be depleted and are able to supply a continuous source of clean energy. The cost of processing the bottle after it was no longer used The rock display with smaller holes shows copper drilling, which is deep underground.For more information, refer to the link:-
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Using context clues, what does “ferrying its newly-gained energy with it “ mean when talking about convection?
Answers
The term "ferrying its newly-gained energy with it" means that the fluid carries the energy it acquired as it rises during convection.
Convection is a mode of heat transfer in which energy is transferred by the bulk movement of particles from one point to another. During convection, a fluid is heated and its particles acquire energy, These energetic particles now move upwards and are replaced by less dense fluid at a lower energy.
The term ferrying its newly-gained energy with it, implies that the heated particles carry the energy they have gained with them as they rise during convection.
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What is the first step in the scientific
method?
A. making an observation
B. developing a hypothesis
C. creating an experiment
D. writing a theory
Answers
Answer:
b. developing a hypothesis
Respond to the following based on your reading.
1. Name the three common states of matter on earth.
2. Which states of matter have a set shape? Explain why this is, based on the
а
animations you observed for the different states of matter.
3. Which states of matter have a set volume? Explain why this is, based on the
animations you observed for the different states of matter.
4. The boiling point is the temperature at which a liquid substance will turn to
vapor, and also the temperature at which vapor will condense to a liquid. The
a
boiling point of ethanol is about 80°C, and the boiling point of water is about
100°C.
a. What can you conclude about the intermolecular forces in water and
ethanol?
b. Do you predict water freezes at a higher temperature or at a lower
temperature than ethanol?
5. Recall how different Van der Waals attractions and how ionic charges changed
the movement of atoms in the animation. Do you think that Van der Waals
attractions or ionic charges are stronger? Why?
Answers
Answer:
Most people are familiar with three states of matter – solids, liquids and gases – but there are two more that are less commonly known but just as important – plasmas and Bose-Einstein condensates. They are very compressible (particles are widely spaced). There are three states of matter: solid; liquid and gas. They have different properties, which can be explained by looking at the arrangement of their particles.
atoms
An atom is the smallest particle of an element, having the same chemical properties as the bulk element. The first accurate theory explaining the nature of matter was Dalton's Atomic Theory: 1. All matter is composed of atoms, and atoms are indivisible and indestructible.
What are the 8 states of matter?
Bose–Einstein condensate.
Fermionic condensate.
Degenerate matter.
Quantum Hall.
Rydberg matter.
Rydberg polaron.
Strange matter.
Superfluid
Answer:
1. Liquid, Solid, Gas
2. Solid has a set shape. Solid can move but gas and liquid is more flexible than solid.
3. Solid has a fixed volume while liquid and gas takes the volume of its container. Solid stays in one place while gas and liquid are flexible.
4. A. The stronger the intermolecular forces in a liquid the higher the boiling point. Therefore, water has a stronger intermolecular force than ethanol.
B. Water molecules are more attracted to each other than ethanol (alcohol) molecules, because water has more hydrogen atoms bonded to oxygen. ... So, that's why alcohol has a much lower freezing point
5. Ionic charges are stronger.
Covalent bonds are known to have the strongest and most stable bonds since they go deep and into the inter-molecular state. A diamond is an example of a compound with this characteristic bond.
Ionic bonds are the next strongest molecular bond following covalent bonds. This is due to the protons and electrons causing an electro-static force which results to the strong bonds. An example would be Sodium Chloride (NaCl), which when separated is Na⁺ and Cl⁻.
Van der Waals forces, also known as Dispersion forces, are the weakest type of molecular bonds. They are only formed through residual molecular attractions when molecules pass by each other. It doesn't even last long due to the uneven electron dispersion. It can be made stronger by adding more electrons in the molecule. This kind of molecular bonds appear in non-polar molecules such as carbon dioxide.
Explanation:
These are the answers based on the reading material provided by James Madison High School