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It would be C. Digestive.
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- Hannah ❤
B- Enzymes act as catalysts to speed up chemical reactions
Urban people change their environment through their consumption of food, energy, water, and land. And in turn, the polluted urban environment affects the health and quality of life of the urban population. ... For example, urban populations consume much more food, energy, and durable goods than rural populations.
Major changes to the formation happen due to heat or pressure.
O2 (oxygen) is a covalent compound
