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the danger of our world the importance of conservation that we’re destroying ourselves that we are changing our world
to live in; to choose which one to live; which one to choose to live in; which one to choose to live; to choose which one
governments modern technology our rivers and forests the United Nations
in that we live on which we live where we live in we live in
the; the a; 不填 a; the the; 不填
put out given out wiped out left out
Unless Once Whether Although
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a record calling on people to conserve nature a rule worked out by the United Nations an important book published in 1970 an idea that nobody would accept
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the danger of our world the importance of conservation that we’re destroying ourselves that we are changing our world
because if so that even though
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