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7 February, 14:42

Choice

Nitrogen cycles between the biotic and abiotic factors in an ecosystem.

Which of the following organisms is primarily responsible for changing

nitrogen into a usable form?

Nitrogen

Free nitrogen

Consumers eat nitrogen

in the air

compounds in plants

is fixed

Some

free nitrogen

into the air

Decomposers

break down

organic matter

A. grasses growing in rich soil

B. bacteria on the roots of a soybean plant

C. cows feeding on grass and other plants

D. flowers of clover plants

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Answers (1)
  1. 7 February, 17:38
    0
    B. Bacteria on the roots of a soybean plant

    Explanation:

    Nitrogen is converted from atmospheric nitrogen (N2) into usable forms, such as NO2-, in a process known as fixation. The majority of nitrogen is fixed by bacteria, most of which are symbiotic with plants.
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