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.

hi there!

question - how does mountainous terrain affect settlements in a region? choose all answers that are correct.

groups trade with each other regularly.

people travel from settlement to settlement.

why: since they travel to go trade or visit it may be harder to get there because of the mountainous terrain.

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answerhydrogenous sediment;