---- *Well, since there is really no specific ecosystem that was asked about in the question, I will just list some common and basic abiotic factors found throughout most ecosystems (maybe you can match this with the ecosystem you are talking about).
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Abiotic factors: nonliving parts of an ecosystem
Some abiotic factors include: ROCKS, SOIL, AIR, SUN, WATER, ETC.
Answer:
C.
Explanation:
A lack of exercise is a major cause of chronic disease
By studying a particular species .
The lowest and thickest layer of the atmosphere is troposphere
The kind that messes everything up I guess