the correct answer is the first one. density = mass / volume.
i hope this helped!
Answer:
The equation for density is density = mass ÷ volume.
Explanation:
ILL GIVE BRAINLIEST AND EXTRA POINTS- Who FIRST recognized the cell as the universal unit of life? HINT ITS NOT HOOKE I GOT IT WRONG
1. Virchow
2. Van Leeuwenhoek
3. Schleiden and Schwann
ASAP PLEASEEEEE
Answer:
2. Van Leeuwenhoek
Explanation:
Hooke did discover it but the cells were dead!
Describe four factors that influence a population growth rate?
Answer:
predators, the space which they live in, the amount of food, and diseases
hope that helps
Explanation:
Which structure in plants produces a substance that protects the extending roots from developing friction?
Answer:
root cap
Explanation:
How do you determine the amount of electrons and protons?
Answer:
The number of protons in the nucleus of an atom is equal to the atomic number
the number of electrons in a neutral atom is equal to the number of protons
Explanation:
Answer:
For both protons and electrons, you need to use the atomic number.
Which forms of energy are used when air is warming in the sunlight? Select all that apply.
Select one or more:
a. Light
O b. Electrical
c. Thermal
O d. Mechanical
Answer:
A and C
Explanation:
The sun itself is light energy and the heat that you feel from the sun is thermal energy.
Light and Thermal energy is used when air is warming in the sunlight.
Energy is emitted by the sun some of which is radiated back and some enter the earth.Solar energy is created by nuclear fusion that takes place in the sun.What is energy?The capacity or power to do work, such as the capacity to move an object of a given mass by the application of force. Energy can exist in a variety of forms, such as electrical, mechanical, chemical, thermal, or nuclear, and can be transformed from one form to another. Energy is a conserved quantity.The law of conservation of energy states that energy can neither be created nor destroyed only converted from one form of energy to another.Hence, A and C option are correct.
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What is science responsible for?
O technological evolution
O technological revolutions
O tragical revolutions
Jill is preparing to cook a family dinner, and she begins by gathering ingredients for the
main course and dessert. She realizes that most ingredients go through both physical
and chemical changes as they cook.
One of the ingredients for her main course undergoes physical changes. Which of the
following is a physical change?
boiling water
cooking eggs
O grilling hamburgers
O baking bread
Answer:
Boiling water
Explanation:
Boiling water is an example of physical change as it does not cause any change in the chemical composition of water.
What are physical changes?Physical changes are defined as changes which affect only the form of a substance but not it's chemical composition. They are used to separate mixtures in to chemical components but cannot be used to separate compounds to simpler compounds.
Physical changes are always reversible using physical means and involve a change in the physical properties.Examples of physical changes include melting,boiling , change in texture, size,color,volume and density.Magnetism, crystallization, formation of alloys are all reversible and hence physical changes.
They involve only rearrangement of atoms and are often characterized to be changes which are reversible.
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What is the end result of mitosis.
O:one cell with two identical copies of DNA
O: two cells with different copies of DNA
O: One cell with two different copies of DNA
Answer:
A
Explanation:
The answer is A i got it right.
Answer:
A
Explanation:
what type of waste does the digestive system get rid of
(Physical science! Help!)
Answer:
b
Explanation:
A collaborative commercial construction venture is like which of the following?
Answer:
(B) two organisms working together
Explanation:
took the test and got it right
Identify the following groups by name and give the number of valence electrons in each...
1. Group 1 (1A):
2. Group 2 (2A):
3. Group 3-12:
4. Group 14 (4A):
5. Group 15 (5A):
6. Group 16 (6A):
7. Group 17 (7A):
8. Group 18 (8A):
(this is talking about the periodic table
Answer:
it's really simple, all you need to do is look at the periodic table. for example, group 1A has 1 valence electron. 2A has 2, 3A has 3, and so on.
HELLLLLLLLLP!!!!!!! I NEED TO BRING MY MY GRADE UP FROM F!!!!!!!!!
Multicellular plants and animals have organs to perform specific functions.
What do eukaryotic cells have to perform specific functions?
A. vacuole
B. organelles
C. cytoplasm
D. ribosomes
Answer:
organelles
Explanation:
each of the organelles like mitochondria, endoplasmic reticulum, lysosomes, golgi apparatus etc performs a specific function critical to the cell's survival.
8.33 pts
Question 2
You are at the zoo and watching a lion chew on some meat. You begin to taunt the lion since he is behind the glass and cannot get to you. He
charges the glass and breaks through. Your adrenaline kicks in and you take off running. What system is repressed during your escape?
Answer:
The parasympathetic nervous system is repressed during your escape.
Explanation:
In the exposed example, during your escape from the lion, the sympathetic nervous system (SNS) and the hypothalamic-pituitary-adrenal (HPA) system are responsible for your body response. They send signals and release adrenaline and noradrenaline to increase your heart biting frequency, and blood pressure, stimulating your respiration and dilating your respiratory tracts.
Once you manage to escape from the lion, and the threat factor is over, the body gets back to normality. At this point, the parasympathetic nervous system is activated. Your body activities become normal again. Your arterial pressure, respiratory frequency, and cardiac frequency get reduced to their normal conditions. You are relaxed and at rest.
When the parasympathetic system is activated, the sympathetic nervous system is not, as they perform in opposite ways.
Coral is a keystone species for the Great Barrier Reef. Many organisms and ecosystems in the reef rely on coral for a variety of reasons. Ocean acidification bleaches coral and kills coral. Explain the impact this would have on the biodiversity of the ecosystems within the Great Barrier Reef.
Answer:
The impact this would have on the biodiversity of the ecosystems within the Great Barrier Reef is that knowing its takes million of years for coral reef to develop it would be devastating as a end result because many organisms and sea lifes rely on the Great Barrier Reef for survival.
Which macromolecules store the most energy?
A: proteins
B: carbohydrates
C: nucleic acids
D: lipids
Answer: Carbohydrates store the most energy.
Explanation:
Answer:
D. Lipids
Explanation:
Lipids store the most chemical potential energy. Carbohydrates are more readily available though so the body use carbs when it can before accessing lipid storages.
Which of the following would be an example of competition in a biological community.
A lion eating a gazelle.
A mosquito sucking blood out of a human.
barnacles being attached to a whale.
O A deer and elk who both eat grass.
Answer:
i think A is the best answer
Explanation:
What are the pieces of evidence that the author uses to support his main ideas?
Should we as a country celebrate the Fourth of July in the United States, or is it, as Frederick Douglass claimed, a "sham" to black people in the United States? Discuss your opinion and explain, using personal examples
Answer:
Jul 3, 2019, The History of Frederick Douglass' Searing Independence Day Oration. So while the U.S. tends to go all out celebrating freedom on the Fourth of July, independence on July 4 are a reminder of the country's hypocrisy on the matter and bloody than are the people of the United States, at this very hour.
Explanation:
Hellllllllllppppp pleasse!!!!!!!
Answer:
Im not sure but I think its a
Explanation:
I learned it in class
Answer: B
As stating the liquid properties of matter, a liquid is a nearly incompressible fluid that conforms to the shape of its container but retains a constant volume independent of pressure. It is one of the four fundamental states of matter (the others being solid, gas, and plasma), and is the only state with a definite volume but no fixed shape.
I would be happy to help with any other questions you may have in the future and will do my best to provide helpful answers! :D
Cells reproduce by splitting in half, a process called cell division. What do cells need to do between divisions to make sure that they don’t just get smaller and smaller?
Answer:
Grow
Explanation:
Before every cell division, cells replicate their DNA to pass on to the daughter cells. They also grow in size and replicate their organelles to ensure that each daughter cell has sufficient resources to carry out all the activities necessary for its function. They also ensure there are sufficient nutrients to perform their tasts.
Cells only need to grow in size and contents before each cell division so as to avoid getting smaller in size with successive divisions.
Each of the daughter cells produced during mitotic cell division goes through an interphase period. The interphase period is divided into 3:
G1 phase: a period characterized by cell growth. An increase in size and volume of content is achieved in this stage.S phase: a period characterized by the synthesis of DNA. The amount of genetic materials (DNA) doubles up in this stage, whereas, the chromosome number remains constant.G2 phase: a phase in which protein is synthesized. After this stage, the cell is ready to pass through a period of division.Without going through the stages above, a cell will simply go into a dormant phase which is essentially a resting phase.
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Which statement about cellular respiration is true?
SERE
O it produces oxygen.
O It requires water.
It is used by every living cell.
O It converts energy to food.
Answer:
It is used by every living cell
In which situation would osmosis most likely occur
The case in which osmosis occurs is that when there is a selective permeable membrane is present and it allows only selective substances to pass through the channel.
What is osmosis?Osmosis is the process in which molecules of the solvent pass via a semipermeable membrane from a lower concentrations to higher concentration or from less concentrated solution to high concentrated solution. In the process of osmosis movement of water takes place.
There are mainly three types of osmosis and these are hypertonic, hypotonic, and isotonic. The process of osmosis is passive transport as water moves from low solute concentration to high solute concentration.
Osmosis is also known as diffusion of water or solvent via a membrane which allows only selective substance to go across the channel. The process of osmosis does not require ATP because it is a passive process.
Therefore,The case in which osmosis occurs is that when there is a selective permeable membrane is present and it allows only selective substances to pass through the channel.
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Which answer best describes the evergreens and herbs of the Chaparral biome?
A)
They are rich in oil which promotes fire movement through the biome.
B)
They are rich in food sources for large birds of prey.
C)
The large deciduous trees provide habitat for birds of prey.
D)
They are usually poisenous to humans.
E)
They can not adapt during drought conditions.
Answer:
A) They are rich in oil which promotes fire movement through the biome.Explanation:
this should be the answer
Answer:
A) They are rich in oil which promotes fire movement through the biome.
Explanation:
i need the awnsers asap!! please and thanks
Answer:
C
Explanation:
How are the health impacts of surface mining different from those of underground mining?
1. higher risk of mine collapse in surface mining
2. higher risk of lung disease in surface mining
3. Lower risk of hearing loss and surface my mining
4. Lower risk of minor injuries and service my mining
Answer:
4. Lower risk of minor injuries and service my mining
Explanation:
There is lower risk of minor injuries in surface mining because in surface mining the mine workers work in the open air as compared to underground mining. In underground mining there is a high risk of mine collapse which results in the death of the mine workers. There is risk of injuries in surface mining such as hearing loss because of high noise of the mining machines.
The impact on health of surface should be option 4. Lower risk of minor injuries and service my mining
Impact on health:There should be less risk of minor injuries in surface mining since in the case of surface mining the mineworkers work in the open air than underground mining. Since in underground mining there is a high risk of a mine collapse that leads in the death of the mineworkers.
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what is an example of a catalyst?
Answer potassium permanganate - Hydrogen peroxide will decompose into water and oxygen gas.
Explanation:
Answer:
They include elemental metals and other inorganic substances. ... Examples of inorganic catalysts in chemical reactions include: potassium permanganate - Hydrogen peroxide will decompose into water and oxygen gas. Two molecules of hydrogen peroxide will produce two molecules of water and one molecule of oxygen.
Explanation:
Hope It helps u
FOLLOW MY ACCOUNT PLS PLS
1. List the major ways in which humans are damaging the environment
2. Floods can devastate an ecosystem, however they can also have a positive impact. Please explain the positive impacts major floods can have on the ecosystem.
3. How do seasonal changes in temperature, water availability and sunlight affect ecosystems?
4. Propose 5 ways that humans can help minimise the negative effects both natural events and human impact can have on ecosystems.
Answer:
1. The large number of the pollution going into the air becaue of overfarming, and the high demand for unrenewable resources.
2. The positive impacts that floods can have is that they can water plants for places in drought like places such as California. For areas that are vastly dry, rain could be essential to humans, plants and animals in need of it.
3. These changes affect the ecosystem puts the ecosystems in a rather different situation than the ecosystem and those supported by it to adapt to the newcomings occuring of different seasonal changes and much more.
4.
-There can be alternatives to not destroying unrenawable resources.
-Use electrical cars that don't pollute the air.
-Be resourceful with their water and don't use more than needed.
-don't litter.
-recycle.
Use organic in a sentence.
Answer:
Nowadays, we are having organic vegetables.
Answer:
The apple that I bought today has never been sprayed with pesticides, so they labeled it as organic!
or
Hydrogen is an organic compound
give scientific reason:-
space debris is a major problem
Answer:
yes
Explanation:
because it would make a space as a dirty
A _____ is a substance that speeds up a chemical reaction without being used up in the reaction
Answer:
An enzyme is a substance that speeds up a chemical reaction without being used up in the reaction.
Answer:
Catalyst
Explanation:
One example of a catalyst is yeast, it helps speed up the process of bread becoming fluffy, for example