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GrogVix [38]
3 years ago
14

What are two reasons why the heart needs its own blood supply

Biology
1 answer:
tangare [24]3 years ago
4 0
1. The heart muscle cells need plenty of oxygen and nutrients so it needs its own blood supply.
2. The heart needs to have a blood supply to get ride of wastes.

Hope that helps. -UF aka Nadia
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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
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If a person develops high blood pressure, one of the compensatory mechanisms that comes into play is the fluid shift mechanism.
ra1l [238]

Answer:  shift

Explanation:

4 0
3 years ago
What are the possible genotypes of the parents of a male child who is colorblind?
viva [34]
Color Blindness is an X-linked trait. This explains why males are much more likely to have it than females. Offspring inherit Color Blindness from their mother, because the father only contributes the Y chromosome. A female can only have the disorder if her father has it and her mother either has it or is a carrier
5 0
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Which lists two things that plants and animals both need​
Greeley [361]

Among others, both plants and animals need oxygen and water. They also both need space and air.

3 0
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Which of the following would most likely represent the types of individuals found in one of the species resulting from shape bec
iren2701 [21]

Answer:

A

Explanation:

The correct answer choice is not B,C, or D so it should be A

Future generations will have the same frequencies of the  A  and  a  alleles as generation 2. Individuals with the  aa  genotype could be produced.

7 0
3 years ago
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