Which of the following statements about mining is true?
a. mining has no long-term effects on the earth.
b. mining is unimportant to the economy.
c. mining has no ecological impact.
d. mining allows useful minerals to be extracted from the earth.

The following statements about mining is true: Mining allows useful minerals to be extracted from the Earth. Correct D

Mining has a large impact on the environment because minerals are contained within the Earth. The long term effects of mining include acid drainage , erosion and dust emissions.

answer; seasons change because earth tilts on its axis; and the angle of the tilt causes the northern and southern hemisphere to trade places throughout the year;

a substance in a physical state in which it does not resist change of shape and will expand indefinitely to fill any container.

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