Abiotic features are not living. they may play a role in helping biotic creatures live, but them theirselves do not live.
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Answer:
The correct answer is option A. "the conversion of gaseous nitrogen into an organism friendly form (ammonia (NH3)".
Explanation:
Nitrogen fixation is a biological process at which gaseous nitrogen is converted into an organism friendly form (ammonia (NH3). Nitrogen fixation is performed in nature by microorganisms in the soil. Some of these microorganisms have a symbiotic relationship with plants. These microorganisms convert the gaseous nitrogen into ammonia, which is used by the plant as a source of nitrogen.
These had no leaves or roots, instead they had green photosynthetic stems which served as both anchors in the ground and photosynthetic surface.
