Biosphere Expedition is likely to be held()
A.for three months
B.in the summer holiday
C.only by local scientists
D.between America and China
A.for three months
B.in the summer holiday
C.only by local scientists
D.between America and China
A.biologist
B.biographer
C.biscuit
D.biosphere
According to the passage,the"biosphere"is the layer on the earth's surface_____.
A.where the atmosphere meets the sea
B.in which birds, fish and animals would die
C.in which plant and animal life can exist
D.in which earthworms and other invertebrates can live
The best definition of "biosphere". as it is used in the text is.
A.the protective envelope formed by the atmosphere around the living earth
B.that part of the earth and its atmosphere in which life can exist
C.the living things on earth whose existence is made possible by circulation of the atmosphere
D.the circulation of the atmosphere's contribution to life on earth
A.A conspiracy by farmers
B.The theft of plants and animals
C.Secret trade agreements
D.Natural resources in the biosphere
The seal of the Biosphere II had to be broken before the experiment ended because______.
A.the bad climate of the desert made the human biospherians ill
B.the poisonous air caused brain damage of the human biospherians
C.the ecosystems in it became so bad that the human biospherians can't live
D.the human biospherians were defeated by swarms of ants and cockroaches
The best definition of "biosphere" as it is used in the text is ______.
A.the protective envelope formed by the atmosphere around the living earth
B.part of the earth and its atmosphere in which life can exist
C.the living things on earth whose existence is made possible by circulation of the atmosphere
D.the circulation of the atmosphere's contribution to life on earth
It can be concluded from the passage that ______.
A.the circulation of atmosphere protects the biosphere and makes life on earth possible
B.if the protective atmosphere is damaged by human activity, all life will cease
C.life is the result of complex interdependent events of nature
D.despite the complexity and power of the atmosphere humans can affect it greatly
It can be concluded from the passage that.
A.the circulation of atmosphere protects the biosphere and makes life on earth possible.
B.if the protective atmosphere is too damaged by human activity, all life will cease.
C.life is the result of complex interdependent events of nature
D.despite the complexity and power of the atmosphere humans can affect it greatly
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