leather shoes are made from animals
Answer:
Plants take in carbon and let out oxygen.
Explanation:
Carbon and cellular respiration has to do with those cycles because plants which do cellular respiration as well as all living things take in either oxygen or carbon and let either one of them out.
Answer:
Enzymes help chemical reactions occur by decreasing the activation energy.
Comparative and experimental investigations are two of three scientific investigations, the other is descriptive investigations.
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