Photosynthesis reduces the leaf's internal concentration of:

a. hydrogen.
b. carbon dioxide.
c. nitrogen.
d. oxygen.
e. sugars and starches.


B

Biology & Microbiology

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a. nerve cell bodies. b. axons. c. dendrites d. ependymal cells. e. oligodendrocytes.

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The tendency for plants to grow toward light is known as 

A. thigmotropism. B. opportunism. C. phototropism. D. geotropism.  

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