Melanin is a pigment that is produced by cells known as melanocytes in the skin of most animals, including humans. ...
Answer: As matter cycles and energy flows through living systems and between living systems and the physical environment, matter and energy are conserved in each change. The carbon cycle provides an example of matter cycling and energy flow in ecosystems.
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Here give it to her now but she copy and pasted and I got in trouble...
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Planet Y
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Planet Y has the smaller period because it takes less time to orbit the star. This is because it has less distance to travel compared to X.