Which of the following forms of nitrogen is most commonly absorbed by plants?

Name: Which of the following forms of nitrogen is most commonly absorbed by plants?
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Plants typically absorb nitrogen in the form of nitrates (NO3-). Nitrites (NO2-) and ammonium (NH4+) can also be absorbed by plants, but nitrates are the most commonly used form. Nitrogen gas (N2) cannot be used directly by plants and must be converted into a usable form by nitrogen-fixing bacteria in the soil.

Which of the Following Forms of Nitrogen Is Most Commonly