Knowing that greenhouse gases are contributing to climate change, how can we reduce our carbon footprint, particularly in the United States? Could hydrogen
fuel replace fossil fuels in the future? Why or why not? Should the size of a person's
carbon footprint be limited by law? Why or why not?

We can reduce our carbon footprints by using renewable energies, calculating our carbon footprints and making improvements, driving less and walking or cycling more, and conserving water.

Explanation:

Since fossil fuels consume more resources and produce more emissions, hydrogen fuel cannot be used to replace them.

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