Answer:
When there is no sunlight and they undergo cellular respiration
Explanation:
Plants respire to get energy like animals. In this chemical process, glucose food breaks down in the presence of oxygen to form carbon dioxide and water with the release of energy. See the diagram below
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If it killed the top level of an ecosystem it would damage the whole ecosystem because it's connected. An organism depends on that top organism which would mean that is that organism dies it would affect the organism that depends on it.
Mitosis is the division of the nucleus while cytokinesis is the division of the cytoplasm
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