Why has earths human capacity increased greatly?

WHy is oil considered a nonrenewable resource?

Which of the following is not a renewable resource?

What terms describes the use of resource in such a way that they will be available for future generations?

What factors does not determine the size of an individuals ecological footprint?

What causes smog?

Which of the following is a component of smog?

How do green house gases support life on earth?

What is global warming?

What may happen when a lake ecosystem becomes polluted with fertilizers?

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