Answer: Oxygen and glucose are both reactants in the process of cellular respiration
Explanation: hope this helps!
The answer is D. A, B, and C all use photosynthesis, and make their own energy. A cougar relies on killing other animals to get energy. I hope this helps!
Answer:
Impulses travel from one neuron to the next by an electrical impulses that travels down the axon of one neuron to another. So I believe its 1.
Explanation:
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