Thgreatest concentration of nitrogen on earth is founin
A) living organisms, including bacteria.
B) the atmosphere.
C) soil minerals.
D) fossil fuels.
E) oceans.
Correct Answer:
Verified
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
Q85: Which of thfollowing does NOT cyclthrough an
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
Q91: Air pollution
A)reduces visibility.
B)corrodes buildings.
C)causes various human diseases.
D)damages
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