1 give reason A.melting of snow can both be a desirable and undesirable change b.appearance of hailey comet once every 72 year is a periodic change

1 answer
Question:

1 give reason
A.melting of snow can both be a desirable and undesirable change
b.appearance of hailey comet once every 72 year is a periodic change

Answers

Answer:A. The melting of ice is both a desirable and undesirable change because, ice is needed to melt so as to make liquid water available for animal and plant use and consumption and also to release the energy used in the fusion process of ice formation. Melting of ice is undesirable because melting ice liberate water slowly, and the water liberated can erode surface soil. Melting ice reduces the available heat sink on earth and also reduces the available stored up fresh water supply on earth. B. The appearance of hailey comet once every 72 year is a periodic change because it's motion around the solar system is repeated with time. The reason for this highly elliptical and eccentric path of motion is largely due to the gravitational effect of the sun and the planets on the comet.

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