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ra1l [238]
2 years ago
14

Which of the following statements below are TRUE about Keystone Species? Pick all that are correct

Biology
1 answer:
AleksandrR [38]2 years ago
6 0
1 is correct. 2 is also correct. 4 is correct as well.
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The chemical subunits that make up Deoxyribonucleic Acid and that form the genetic alphabet are called
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The chemical subunits that make up Deoxyribonucleic Acid and that form the genetic alphabet are called DNA

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How would a tree falling from the top most layer most immediately affect the surrounding plants in the other lower layers?.
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More sunlight but less space.

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The fallen tree would have let in more sunlight as it was blocking sunlight from getting in most of the time. Since the tree fell more sunlight will be able to get in. The only problem would the fact that there will be less space depending on the size of the tree and how it fell over.

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Which prediction will most likely describe how friction will affect her findings? The distance for Trial 3 will be greater than
Juliette [100K]

The complete question is :

Charlie is investigating friction. She will use the same amount of force to push two wooden balls across two level surfaces. Then she will record her results in the table below.

Which prediction will most likely describe how friction will affect her findings?

Answer:

The distance for Trial 3 will be greater than the distance for Trial 4 because the difference in surface roughness will affect friction.

Explanation:

The frictional force depends greatly on the roughness of the body surfaces. It acts opposite to the direction of motion when two body surfaces have a relative motion between them.

In the context, equal mount of force is applied to push the wooden balls. So the net force which acts on the balls are :

F' = F - f

Here, F = the force applied

         f = force of friction

And f = μ.N (N = reaction force)

Here μ is the coefficient of friction that depends on the surface roughness. The frictional force will be less when the surfaces are smooth. Thus for the trails 3 and trial 4, the distance for trail 3 would be greater than trail 4 as the surface is polished and would offer less friction.

8 0
2 years ago
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