Which of the following is a human -made factor that can change climate?
a. the solar cycle
b. respiration
c. a volcano eruption
d. deforestation

The correct answer is letter D.

Explanation: Deforestation is currently one of humanity's greatest challenges. Growing in many regions of the planet, a removal of vegetation cover has been worrisome or worldwide.

The exploitation of natural resources has been going on since the dawn of humanity. However, as society developed, this exploration intensified, endangering the balance of the planet and jeopardizing the supply of future generations.

The answer is D.

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it would have to be gasioline

4 copper and gold, the california gold rush is why im pretty sure.