They do lower the activation energy but they provide an alternate pathway for the reaction to happen quicker and they do not get used up in the reaction
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Image result for Explain how cells are related to living things.
Cells are the basic building blocks of living things. The human body is composed of trillions of cells, all with their own specialised function. Cells are the basic structures of all living organisms. Cells provide structure for the body, take in nutrients from food and carry out important functions.
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nCoV is often used to indicate a newly recognized coronavirus prior to definitive identification and classification. It is sometimes used in combination with the year of identification.
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It has to be c since they are growing
