What are 2 ways carbon returns from animals into the water

marine animals die and sink to the bottom and turn into fossil fuels. also through cellular respiration as we turn food and oxygen into usable energy for us and as a waste product we create carbon dioxide in the form of "water". (steam)

Explanation:

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the abdomen (less formally called the belly, stomach, tummy or midriff) constitutes the part of the body between the thorax (chest) and pelvis, in humans and in other vertebrates. the region occupied by the abdomen is termed the abdominal cavity. the stomach secretes acid and enzymes that digest food. ridges of muscle tissue called rugae line the stomach. the stomach muscles contract periodically, churning food to enhance digestion. the pyloric sphincter is a muscular valve that opens to allow food to pass from the stomach to the small intestine.

do you have a picture?