Answer:
light
Explanation:
excessive nitrogen can harm water bodies excessive nitrogen can cause overstimulation of growth of aquatic plants and algae excessive growth of the organisms intern can clogged water intakes used to solve oxygen as they decompose and block light to deeper waters
It contracts and relaxes!
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Answer:
Open channels allow an influx of sodium ions into the cytoplasm of the muscle fiber. The sodium influx also sends a message within the muscle fiber to trigger the release of stored calcium ions. The calcium ions diffuse into the muscle fiber.
Explanation:
Biology: study of life
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