Which plants argrown to increasthamount of nitrogen in thsoil?
A) watermelon and cantaloupe vines
B) legumes
C) mints
D) grasses
E) heaths
Correct Answer:
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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
Q86: Thgreatest concentration of nitrogen on earth is
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
Q92: Which of thfollowing statements is FALSE?
A)Ecologist use
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