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allochka39001 [22]
3 years ago
9

What raw materials do cells need to produce energy? (Please Help!! - I'm offering 50 points!)

Biology
1 answer:
jeyben [28]3 years ago
7 0
Oxygen, nourishment (vitamins, lipids, fats, etc.)
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Stimulus can be defined as an obvious change in either the chemical or physical structure of an organism' environment (either external or internal). Thus, all living organisms (both animals and plants) respond to changes in their environment and consequently, an appropriate response or reaction is made. Also, stimulus arising from within the organism is known as internal stimulus while those from its environment are known as the external stimulus.

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