B)
Because it flows. I dunno about you, but that sounds like a liquid to me! Sorry if i'm wrong.
Answer:
1. they are the most complex green flowering plants
2. they are vascular plants
3. they have well developed and complete flower
4. they are mainly terrestrial plants
5. they are seed plants with seed enclosed in the fruit
Explanation:
hope this helps
Most nitrogen fixation is performed by bacteria, but they are biotic, not abiotic. Lightning does have the ability to fix atmospheric nitrogen.
I believe it is variables bc it includes independent, dependent, and controls
