In interspecies competition, two species use the same limited resource. Competition has a negative effect on both of the species (-/- interaction).
A species' niche is basically its ecological role, which is defined by the set of conditions, resources, and interactions it needs (or can make use of).
The competitive exclusion principle says that two species can't coexist if they occupy exactly the same niche (competing for identical resources).
Two species whose niches overlap may evolve by natural selection to have more distinct niches, resulting in resource partitioning.
<span>I believe the human population would of had to develop another food source consisting of the necessary proteins for human growth. I don't know if peanut butter is a plant, but that would be a great alternative for the consumption and digestion of food necessary to sustain life.</span>
Answer: CO2 in the atmosphere
Explanation:
During photosynthesis, plants removes carbon dioxide in large amount from the atmosphere and then utilize the carbon atoms to build up organic molecules.
Thus, this removal of CO2 from the atmosphere provide a natural solution to prevent the gas accumulation in the atmosphere, which is often generated by human activities and natural causes.
I believe the answer is the primitive organic molecules were formed in an oxidizing atmosphere in the primordial soup.
