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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