As the human population grows, what happens to our natural-resource requirements?
A factory is emitting large amounts of CFCs into the atmosphere. How might this affect people?
Which gases contribute to the greenhouse effect?
Which water source may become polluted as it travels over land?
Which of the following substitutions can help reduce air pollution?
Which is a consequence of global warming?
What are sustainable use practices?
A new highly nutritious crop is going to be planted in an area where it has never been planted before. Which is the most likely outcome of such an event?
Which is a sustainable practice?
Which type of pollution includes CFCs and smog?
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