Answer:
Internal respiration occurs in the respiratory membrane of metabolizing tissue. Inside the mitochondria, cellular respiration, which produces energy in the form of ATP, occurs. Cellular respiration requires oxygen and carbon dioxide is produced as a waste.
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Answer: protons
Explanation: atoms of each element contain a characteristic number of protons
62 -- The roots absorb water for the plant, and also provide it with stability, ie to keep it from falling over.64 -- Structure B is a leaf, and a leaf's main function is to take in sunlight and perform photosynthesis, which makes food for the plant.
Phototropism is when a plant moves towards the sun. Geotropism deals with gravity. It is the turning or growth movement by a plant in response to gravity. This helps the plants roots go deeper ir grow in different directions to find water.