In the photosynthesis pathway employed by most grasses, the uptake of the 13C isotope of carbon is:
A) much less than in the pathways used by trees or succulents
B) about the same as in the pathway used by trees
C) about the same as in the pathway used by succulent plants
D) higher than in the pathways used by trees or succulents
Correct Answer:
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Q10: By the end of the Miocene, the
Q11: When the forests diminished at the end
Q12: Savannas are characterized by:
A) dwarf tree species
B)
Q13: Most trees follow which photosynthetic pathway:
A) C4
B)
Q14: Most grasses follow which photosynthetic pathway:
A) C4
B)
Q16: Evidence of the worldwide expansion of the
Q17: In the history of the earth, extinction
Q18: Human beings evolved from:
A) an ape species
Q19: The contraction of forest habitat at the
Q20: The characteristic possessed by our ancestors that
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