The correct answer is <u /><em>a</em><em>daption</em>. The particular environment in which a particular environment is exposed to gives it the characteristic or the ability to adapt. This is how a particular ecosystem works. It is the relationship of organisms within their environment that evolves through time in order for it to survive and propagate into more adapted kinds of species.
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Answer:
pathogens
Explanation:
pathogens may occur in various way e.g spread from a person to person by directly body contact
Producers, because according to food pyramid, only 10% of energy is passed onto the next layer, where the other 90 is passed off as heat, so there must be more producer in order to sustain the ecosystem.
Vascular tissue is located inside the pericycle of a root, which I believe would be considered the inner layer.
