It is potential energy is converted into apt energy for use in living things.
Answer:
There is no short answer.
Explanation:
The primary difference between the periodic and perpetual inventory system is that the perpetual system keeps track of things from the start to finish continuously while the periodic system divides it into periods and keeps the records at the end of every set period of time.
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If they live in a river, they would most likely need fins (to swim) and gills (to breathe under water)
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