Why do all plant cells contain chloroplasts? A
Chloroplasts are necessary for cellular respiration.

B
Chloroplasts are necessary for photosynthesis.

C
Chloroplasts are necessary for reproduction.

D
Chloroplasts are necessary for growth.

chloroplasts allow plants to capture the energy of the sun in energy rich molecules.

Explanation:

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thrombocytopenia, which is a deficiency in blood platelets, can cause bleeding and bruising in the dermis similar to senile purpura. other possible causes include: exposure to ultraviolet rays and aging skin are common causes of senile purpura. senile purpura may also be a sign of collagen loss in the skin and bones.

acceleration = 18/3 = 6 m/s per second.

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