Question

modeling the carbon cycle quick check
what is the definition of biosphere? (1 point)
the area of the earth that is liquid
the area of the earth where all living things exist
the area of the earth covered by water
the area of the earth that is solid

Explanation:

The biosphere is the global ecological system integrating all living beings and their relationships, including their interaction with the non-living components of Earth. The other options describe Earth's other spheres: liquid/solid areas are parts of the geosphere, and water-covered areas are the hydrosphere.

Answer:

the area of the earth where all living things exist