Carbohydrates are your main sources of energy. They are needed for operation of the brain, body, and inner organs.
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Because their bodies tell them that they need more oxygen and so breathe faster, and try and get the oxygen their body requires and depends on.
Answer:
°The process of photosynthesis is a physical change
A animal that is hunted for food<span> by another animal Predator and Prey When a consumer (animal) eats a producer (plant), it receives some of the plant's </span>energy.Flow<span> of </span>Energy<span> * A </span>food chain<span> shows the path of </span>food energy<span> from plants to animals. * Each </span>food chain<span> is different depending on the ecosystem</span>
Years would be the independent variable because any sort of time is usually the independent variable.
