19. Human activities have triggered a change in abiotic factor such as climate change, soil erosion, poor air quality, and undrinkable water. Which of the following poses a positive human impact on the ecosystem?
A. Humans being dependent on coal and fossil fuels for energy.
B. Cutting of trees to build stores, houses, and other buildings.
C. Reducing fuel emissions associated with motor vehicles.
D. Throwing of plastics and other wastes in the river.
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Answer:
A
Explanation:
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