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liq [111]
3 years ago
6

What 4 things help to keep blood flowing through the veins in one direction?

Biology
1 answer:
Elanso [62]3 years ago
7 0

Answer:

Valves in the veins keep blood flowing in the correct direction.

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_______ are on chromosomes in the nucleus of a cell.
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Thermal and radiant

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Thermal energy is energy in the form of heat (such as fire). Light energy is a form of radiant energy. When a match is struck it creates fire which creates heat (thermal energy) and light (radiant energy) so the two types of energy that the match is transformed into are thermal and radiant.

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What are some ways that the biosphere interacts with other three components of the Earth system?
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These spheres are closely connected. For example, many birds (biosphere) fly through the air (atmosphere), while water (hydrosphere) often flows through the soil (lithosphere). In fact, the spheres are so closely connected that a change in one sphere often results in a change in one or more of the other spheres.

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2 years ago
Why is having a large surface area<br> important for a cell?
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