What system includes the living components of earth

The correct answer will be-Biosphere.

Explanation:

The living components of the earth are known as the biotic components which are usually producers (plants), consumers (animals) and decomposers (fungi and bacteria).

These organisms live in various habitats like air, water and land. The air, water and land together comprise to form a sphere on earth called the biosphere.

Thus, the living components are present in the biosphere.

answer by yourhope:

how do models compare to real-world objects?

d. most models represent a real-world object in a simpler way.

: )