Phytoremediation refers to the process by which plants:
A) clean up polluted environments.
B) deter pests.
C) control weeds.
D) form hybrids.
E) transfer genes.
Correct Answer:
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Q24: The function of phloem is to _.
A)retard
Q25: The activity of the _ results in
Q26: The food manufactured by photosynthesis is transported
Q27: Water is transported upward through the plant
Q28: Secondary growth refers to growth:
A)that is of
Q30: In all ecosystems, heterotrophs are completely dependent
Q31: Humans first appeared about _ years ago.
A)2000
B)200,000
C)2
Q32: A seed is composed of three parts:
A)root,
Q33: The projected human population of the Earth
Q34: What organisms are found at the base
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