Resource Conservation Answers

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Hydrogen fuel cells burn with _______ and produce _______.

water, oxygen

oxygen, water

carbon dioxide, oxygen

oxygen, carbon dioxide

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How might a dependence on fossil fuels lead to international security risks?

The greater demand for fossil fuels with decreasing supplies could lead to an increase in competitive action over limited resources.

A dependence on fossil fuels could lead more countries to produce oil, leading to greater competition for sales.

An increase in dependence on fossil fuels could lead to lower costs for oil, causing disputes between producer and consumer countries.

All of the above

How does biofuel use differ from solar, wind, and geothermal energy use?

Biofuels can have a more widespread use.

Biofuels are less damaging to the environment.

Biofuels are not a renewable energy source.

Biofuels cannot be used as an energy source.

Why might it be advantageous to use nonrenewable resources over renewable resources?

The use of nonrenewable resources can be cheaper and more efficient than the use of renewable resources.

Nonrenewable resource use has a lower impact on the environment than renewable resource use.

Nonrenewable resources are always more readily available than renewable resources.

All of the above

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