Animal because the algae and plant would have to have chloroplast and the bacterium does not have a nucleus as it is a prokaryote.
Answer:
Sunlight plus carbon dioxide and water make plant food.
Explanation:
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Answer:
Gas exchange during respiration occurs primarily through diffusion. Gas molecules move from a region of high concentration to a region of low concentration. Blood that is low in oxygen concentration and high in carbon dioxide concentration undergoes gas exchange with air in the lungs.
Explanation:
Answer:
Air is essential for all organisms