Question

which of the following processes is illustrated by the downward arrows from the atmosphere that show the conversion of nitrogen gas into usable forms available to producers? a nitrogen assimilation b nitrogen fixation c photosynthesis d weathering

Explanation:

Nitrogen fixation is the process that converts atmospheric nitrogen gas into ammonia or other nitrogen - containing compounds that can be used by producers like plants. Nitrogen assimilation is the uptake of nitrogen compounds by plants after fixation. Photosynthesis is the process by which plants convert carbon dioxide and water into glucose and oxygen using light energy. Weathering is the breakdown of rocks and minerals.

Answer:

B. Nitrogen fixation