WVGSA Grade 8 Science Practice Questions - West Virginia General Summative Assessment Grade 8 Science Exam

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How has the widespread burning of fossil fuels (coal, oil, natural gas) since the Industrial Revolution altered the Earth's global carbon cycle?

It transfers stored carbon from underground geological reserves into the atmosphere as carbon dioxide gas faster than natural sinks can absorb it It destroys all carbon atoms in Earth's atmosphere It locks carbon inside plants, preventing photosynthesis It decreases the concentration of greenhouse gases in the atmosphere

Correct Answer:

It transfers stored carbon from underground geological reserves into the atmosphere as carbon dioxide gas faster than natural sinks can absorb it

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