Answer:True because air need to enter the lungs
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<span>b. photosynthetic organisms provide energy for other organisms on earth.
B is the most suitable answer as photosynthetic organisms get their energy from the sun, and other organisms get their energy from photosynthetic organisms, so the sun is the source of energy for all life.</span>
Proteins is a main source of energy that transports nutrients through your body, provides structure, and acts as a messenger via the circulatory system.