Answer:
Closed Systems. The earth system as a whole is a closed system. ... Virtually no mass is exchanged between the Earth system and the rest of the universe (except for an occasional meteorite). However, energy in the form of solar radiation passes from the Sun, through the atmosphere to the surface.
Explanation:
Answer:
The earth is a closed system because only energy is naturally transferred outside the atmosphere.
Explanation:
A closed system is a system in which only energy is transferred with its surroundings. An open system, however, is a system in which both energy and matter can transfer.
Select the correct answer.
John owns a large farm and employs almost 50 laborers on the property. With the increasing global warming situation he wants to provide
protection for his farm workers from the UV rays. Which personal protective equipment should John provide to his laborers?
OA. hard hat
OB. broad-brimmed soft hats
OC. HAZMAT suit
OD.
broad-brimmed cap
Answer:Hard is the answer
Explanation:
We did not use a control group in this experiment. What is the purpose of the control group and how could we have set up with one for this experiment?
Answer:
The experiment will be faulty
Explanation:
To set up a control group, you pick individuals at random( so you don't just get a group to be of the same character, or opinion).
The control group is vital in every experiment because, sometimes our hypothesis could be mere coincidence or assumptions. So the control group will be compared to the test group to see if the results are correct. Plus look at it this way, without a control group, your hypothesis wouldn't be a theory.
what is excretion,list the ecretory product for mammals and indicate where each product is formed,make labelled of the nephron of a mammal
Explanation:
The mammalian kidney is a compact organ with two distinct regions: cortex and medulla. The functional unit of the kidney is the nephron. Each nephron is a tubular structure consisting of four regions. It arises in the cortex as a small vesicle about one-fifth of a millimetre (0.008 inch) in diameter, known as Bowman’s capsule, into which projects a tuft of capillary blood vessels, the glomerulus. Bowman’s capsule is continuous with the proximal convoluted tubule, which also lies in the cortex. Following the proximal convoluted tubule is the loop of Henle, which descends into the medulla and then runs straight up again to the cortex where it continues as the distal convoluted tubule. A collecting tubule, into which several nephrons open, courses through the medulla to open a wide cavity, the pelvis of the kidney. From the pelvis the ureter leads to the bladder, and from the bladder the urethra leads out of the body.
The science and tools used to advance agriculture are known as?
Answer:
biotechnology
Explanation:
In agriculture, biotechnology is using technology to make new discoveries and innovations in crop farming and farm animals
If heart rates is 76 beats per minute how many times the heart beat in a day
Answer:
109,440 beats per day
Explanation:
75 times 60 (the amount of minutes in an hour) equals 4,560
456p times 24 (the amount of hours in a day) equals 109,440
Predict why is blood sugar important to understanding the type of food you eat.
Answer:
Blood sugar, also known as blood glucose, comes from the food you eat. Your body creates blood sugar by digesting some food into a sugar that circulates in your bloodstream. Blood sugar is used for energy. The sugar that isn't needed to fuel your body right away gets stored in cells for later use.
Explanation:
Answer:
that isn't needed to fuel your body right away gets stored in cells for later use.
Explanation:
Model organisms are used to test hypothesis because:____.
Answer:
A model organism is a species that has been widely studied, usually because it is easy to maintain and breed in a laboratory setting and has particular experimental advantages. Model organisms are non-human species that are used in the laboratory to help scientists understand biological processes
Explanation:
what is the term for a membrane-enclosed structure within a cell that performs a specific function?
Answer:
Nucleus
Explanation:
PLEASE HELP ASAP!!! CORRECT ANSWERS ONLY PLEASE!! Which of Earth's layers has the same chemical composition as the mesosphere? A. inner core B. lithosphere C. asthenosphere D. outer core
Answer:
C : The asthenosphere
Explanation:
The asthenosphere located next layer within the mantle . It has the same chemical composition of the mesosphere.
Answer:
asthenosphere
Explanation:
What is the Chemical formula for the molecule shown?
Answer:
NH3
Explanation:
Ammonia is a chemical compound formed by the chemical combination of Nitrogen and Hydrogen atoms. One Nitrogen and three hydrogen atoms are joined together by a covalent bond to form the ammonia compound. Hence, ammonia has a chemical formula of NH3.
Therefore, the molecule shown in the image, which is identified as ammonia has a chemical formula: NH3. Ammonia is a gaseous substance at room temperature and gives a pungent odor when inhaled.
Choose all the answers that apply.
Ethical scientists ______
keep detailed records
make biased conclusions
follow the scientific method
communicate experimental results
report inaccurate date
Answer:
keep detailed records
Explanation:
(20points)
Students created a Venn diagram in class, comparing plant and animal cells. What is incorrect in the Venn diagram?
A) Both animal and plant cells have centrioles. That term should be in the center.
B) Only plant cells have vacuoles. That term should only appear on the plant side.
C) Plant and animal cells have a cell membrane. That term should be in the center.
D) There is nothing wrong with the information represented in the Venn diagram.
Answer:
C
Explanation:
Plant and animal cells have a cell membrane. That term should be in the center is incorrect in the Venn diagram.
What are the features of Venn diagram?
A Venn diagram is a widely used diagram style that shows the logical relation between sets, popularized by John Venn in the 1880s. The diagrams are used to teach elementary set theory, and to illustrate simple set relationships in probability.
Moreover, a Venn diagram is an illustration that uses circles to show the relationships among things or finite groups of things. Circles that overlap have a commonality while circles that do not overlap do not share those traits.
A Venn diagram uses overlapping circles or other shapes to illustrate the logical relationships between two or more sets of items. Often, they serve to graphically organize things, highlighting how the items are similar and different.
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The recommended order of draw for a complete blood count, prothrombin time, and cholesterol is:________
Answer:
The use of the word "draw" here refers to the collection of blood samples for laboratory tests.
Step A - The first draw goes into the blood culture bottle or tube with a yellow cover.
Step B - This goes into the coagulation tube with a blue cover.
Step C - The next draw goes into the tube for non-additives. This usually has a red top
Step D - This features collection of blood into the tubes with additives. When dealing with additives, blood samples and additives it is important that the sample and additive is rigorously homogenized. This part can is broken down as follows:
this goes into the SST tube. This tube contains a seperator and a clot activator and is usually is colour coded reddish-gray or gold top.This tube contains Sodium heparin and has a leaf green topThis tube (PST) contains PST contains lithium heparin anticoagulant and a gel separator. It's cover is colour coded light greenThis tube contains Ethylenediaminetetraacetic acid or EDTA for short. It's cover is usually colour coded lavendarThis tube is labelled ACD that is Acid Citrate Dextrose. It's top is coded light yellowthis tube contains Oxalate/Fluoride and it's cover must be colour coded gray.
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Oil and fats are types of
Oils and fats are types of lipids.
Answer:
they are a type of lipid fats.
hope this helps!
Which is the MOST accurate statement about cells?
(A) While all organisms have the same total number of cells, the types of cells differ,
(B) Cells are the body's building blocks, the units that make up all organisms.
(C) Cells are identical inside, which equips them to do fundamental things like making copies of themselves.
(D) While animal and plant cells differ because of the cell wall, cells are otherwise the same outside.
The most accurate statement about cells is that they are the body's building
blocks, the units that make up all organisms.
Cells are regarded as the smallest unit of life and the different aggregations
is what forms the tissues, organs and system which make up all organisms.
This is why it is referred to as the building block of all organisms.
Organisms don't possess equal number of cells and all aren't identical as a
result of the various functions each type performs.
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Common symptoms of iron deficiency and anemia include muscle weakness shortness of breath and lightheadedness why does Iron
deficiency cause of the symptoms
Answer: Because not enough oxygen is getting into the blood cells
Explanation:
Draw the phases of mitosis of a cell that contains four chromosomes as its diploid or 2n number
Answer:
Please find the diagram attached and explanation below.
Explanation:
Mitosis is a type of cell division that forms two genetically identical cells. It involves four stages viz; prophase, metaphase, anaphase, and telophase.
Considering a diploid (2n) cell with four (4) number of chromosomes.
Prophase- four duplicated chromosomes condense and pair up.
Metaphase- four chromosomes line up at the cell plate or equator in order to get separated.
Anaphase- the sister chromatids are pulled apart by the spindle microtubules
Telophase: the chromosomes recoil and organelles form at opposite poles of the cell.
At the end of cytokinesis, which is division of the cytoplasm, four chromatids are present in each daughter cell. The chromatids becomes individual chromosomes that retain the diploid (2n) chromosome number of four.
Mitosis is a cell cycle division in which the parent cell divides into two daughter cells with alike chromosome numbers.
It consists of four steps namely prophase, metaphase, anaphase and telophase.
According to the question, the diploid (2n) cell with four chromosomes will divide by the following stages. Find the attached image below for the diagram:
Prophase- four copied chromosomes will consolidate and pairing will happen.Metaphase- the joined chromosomes will queue at the middle of the cell plate or equator.Anaphase- the sister chromatids begins stretching apart by the spindle micro tubules near the edge of the poles.Telophase: the chromosomes commence recoiling and other organelles start developing at the corresponding poles of the cell.This was the process of karyokinesis and will be followed by cytokinesis that is the cytoplasm division.
Now the chromatids will become individual chromosomes and two diploids (2n) daughter cells will be formed.
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for an experiment to produce useful data what must happen
Answer:
Im not very sure how to answer that question, if you had a list of answers it would be a tad easier
Explanation:
Four basic components that affect the validity of an experiment are the control, independent and dependent variables, and constants. These basic requirements need to be present and identified to consider an experiment valid.
Maybe this will help ^^
Simplify the following expression. (2x - 5)(6x2 - 6x - 11) A. 12x3 + 18x2 - 52x - 55 B. 12x3 - 42x2 + 8x + 55 C. 12x3 - 18x2 - 52x + 55 D. 12x3 - 42x2 + 8x - 55
Answer:
none of the following are correct.
Explanation:
the correct answer is 12x^3 - 42x^2 + 18x + 55
Answer:
None of the given answers are correct
Explanation:
Which of the following is the best definition of the term dependent
variable?
Answer:
what's measured and effected during a study.
it's named dependent because depends on it's independent variable. dependent variable is often called a response or output, because it's the response you'll get after an experiment.
1. Has it been tested and observed numerous times by more than
one group of scientists?
Answer:
Yes, it has.
Explanation:
Replicability of an experiment holds great importance in the scientific world. Different groups of scientists ought to be able to replicate a certain experiment to achieve the same results/conclusions as the first team of scientists did. This is essential to prove that the findings are credible and did not just occur by chance, which is the case here too.
Which describes the composition of carbohydrates
Answer:
are hydrates consist of carbon hydrogen and oxygen the general structure of carbohydrates is (CH2O)n. they are ganic compounds organized in the form of aldehydes or ketones with multiple hydroxyl groups coming up the carbon chain.
Which of the following can be categorized as prokaryotic
Answer:
1. Animals,
2. plants,
3 fungi,
4 protists are all eukaryotes
Explanation:
hope it's help u
what is a weather font?
A weather front is a boundary separating bands of thunderstorms and severe weather, and may on occasion be preceded by squall lines or dry lines. Warm fronts are usually preceded by stratiform precipitation and fog. The weather usually clears quickly after a front's passage
What is the definition of control
Answer:
Control is the power or authority to influence or to exercise restraining or directing influence over people's behaviour or the course of events.
Explanation:
The basic unit of ______________ in the metric system is the gram. Group of answer choices length volume density mass
Answer:
Mass.
Explanation:
It's mass. Example: when a baby is born, is he (or she) measured in grams, or in pounds?
The characteristics of life help scientist study all organisms both living and extinct suck as the horse and horse ancestors shown earlier.
2. The skeletons and fossils shown in the previous illustration provide evidence for what process?
3. If you compared the skeleton of an adult horse to that of a newborn foal, what would you be studying?
4. A scientist compares the DNA sequence of Equus and Merychippus and draws conclusions about their genes and proteins. This would be an example of what characteristic of life?
Answer:
The correct answer is ;
1. evolution.
2. growth and development
3. every living organism grows or develop
Explanation:
Fossils and traces and body remain provide information about the evolution of organisms and earth was found and how much it is change from then to modern organism and modern earth.
Comparing the skeleton of an adult horse to that of newborn foal provides the information of growth and development of the bones of foal to the adult horse.
Developing or growing is the property of life which is found in every living organism and comparison of the DNA sequence of Equus and Merychippus and draws conclusions about their genes and proteins isan example of this property.
Answer:
1 evolution
2. growth and development
3. universal genetic code
Explanation:
Why would another parasitic organism, such as a disease-causing bacteria, be
considered a living organism?
Please!!
Explanation:
Hey there!!
The reason is as per the characteristics of living organism, they multiply their number (replicate) and feeds on various host body.
Hope it helps...
Which statement best describes the relationship of photosynthesis and energy?
The process of photosynthesis is energy-storing because the process converts light energy into chemical energy,
which is stored in the bonds of glucose.
The process of photosynthesis is energy-releasing because the process converts light energy into free energy that
can be used for cell functions.
The process of photosynthesis is energy-conserving because no energy is used throughout the process of forming
glucose and oxygen molecules.
The process of photosynthesis is energy-wasting because photosynthesis is an inefficient process that depletes the
cell of energy stored in the bonds of glucose.
Answer:
the
Explanation:
process of photosynthesis is energy releasing because the process concerts light energy into free energy that can be used for ceel function
How do enzymes act as catalyst to speed up biological reactions
Enzymes are biological catalysts. ... Thus enzymes speed up reactions by lowering activation energy. Many enzymes change shape when substrates bind. This is termed "induced fit", meaning that the precise orientation of the enzyme required for catalytic activity can be induced by the binding of the substrate.on:
Answer:
Chemical reactions occur at the active site of enzymes, where a precise 3D orientation of amino acids is an important feature of catalysis.
Catalysts lower the activation energy for reactions. The lower the activation energy for a reaction, the faster the rate.
Activation energy is energy that must be added to get a reaction started, which is recovered as the reaction proceeds.
Enzymes can catalyze reactions through a variety of ways including destabilizing the bonds within the substrate.
Explanation:
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