Plants having the ability to take up organic nitrogen are most likely in which of the following

environments?



a. arctic tundra d. grassland
b. salt marsh e. temperate forest
c. tropical forest


A

Biology & Microbiology

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The insects were the first organisms to

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A(n) ________ is a diagram in which blocks represent each trophic level

Fill in the blank(s) with correct word

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The figure above illustrates a(n) ____

a. guanine nucleotide b. cytosine nucleotide

c. thymine nucleotide d. adenine nucleotide e. uracil nucleotide

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What did Watson and Crick deduce about the three-dimensional structure of DNA?

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