Which of thfollowing does NOT cyclthrough an ecosystem?
A) carbon
B) water
C) energy
D) nitrogen
E) phosphorus
Correct Answer:
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Q80: Which of thfollowing is NOT truof ecosystems?
A)Although
Q81: Nitrogen is releaseinto thatmospherby
A)nitrogen fixation.
B)denitrification.
C)nitrification.
D)ammonification.
E)decomposition.
Q82: Thsimplfoochain, grass >>> zebra >>> lion provides
Q83: Thphosphorus moving into foowebs is originally obtainefrom
A)soil
Q84: Energy flow in an ecosysteis
A)cyclical.
B)one-way.
C)two-way.
D)reversible under different
Q86: Thgreatest concentration of nitrogen on earth is
Q87: Which plants argrown to increasthamount of nitrogen
Q88: Energy pyramids archaracteristic of ecosystems because
A)not all
Q89: Most of thcarbon now present in thearth's
Q90: Thchemical elements that aravailablto producers arusually in
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