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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Answer:
The cardio-respiratory system works together to get oxygen to the working muscles and remove carbon dioxide from the body. During exercise the muscles need more oxygen in order to contract and they produce more carbon dioxide as a waste product.
Explanation:
the mass of the products in a reaction is always <span>the total </span><span>mass of the reactants</span>
Answer:
Explanation:
Photosynthesis makes the glucose that is used in cellular respiration to make ATP. While photosynthesis requires carbon dioxide and releases oxygen, cellular respiration requires oxygen and releases carbon dioxide. It is the released oxygen that is used by us and most other organisms for cellular respiration. :)