For a fish to be buoyant, or float, it must displace less water or the same amount of water as its own body mass. ... Many fish use swim bladders to help them with quick depth changes. These bladders fill with air to help fish rise or release air so fish can sink, often in conjunction with forward movement.
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A. Decreasing amount of energy needed to start a reaction.
Answer:
Photosynthesis is the process of converting light energy into chemical energy in the form of glucose, in small structures called chloroplasts. The glucose made in photosynthesis is then used during cellular respiration.
