Which statement best describes the interactions between the sun and the planets in the solar system. A. Gravity pulls planets towards the Sun.
B. The Sun´s gravity causes the planets to shrink.
C. Gravity pushes planets away from the Sun.
D. The Sun´s gravity causes the planets to expand

it's A: Gravity pulls planets towards the Sun.

Explanation:

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option a is correct i.e.

explanation:

in context to the membrane of nerve impulse, the outer membrane of neuron is semi permeable that is only sodium ions can pass through the membrane i.e. smaller ions can pass through the membrane while larger ions cannot pass through it.

humans, along with other animals and plants, have linear chromosomes that are arranged in pairs within the nucleus of the cell. the only human cells that do not contain pairs of chromosomes are reproductive cells, or gametes, which carry just one copy of each chromosome.