Aerobic respiration, a process that uses oxygen, and anaerobic respiration, a process that doesn't use oxygen, are two forms of cellular respiration. Although some cells may engage in just one type of respiration, most cells use both types, depending on an organism's needs.
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Thank you for your comment, Barbara. You are correct that Walmartâs toll free number is 1-800-WALMART; however, that is the toll free number for Walmart stores. Walmart.com is treated as a completely different entity, and the 800-WALMART number does not apply to the Walmart.com business.