I’m pretty sure the answer is c. Protista. Hope this helps!
Bacteria that change nitrogen gas from the atmosphere into solid nitrogen usable by plants are called nitrogen-fixing bacteria. These bacteria are found both in the soil and in symbiotic relationships with plants.
Forest fires promote regrowth, clear cut has to be replaced
Answer:
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Explanation:
The relative importance of food supply and predation as determinants of animal population density is a topic of enduring debate among ecologists. ... In the 148 experiments recorded, food supplementation had an overall positive and significant effect, increasing population densities by 1·5‐fold.
