Question

The biosphere is composed of

a) all the living things on Earth’s surface

b) all the living things in the atmosphere, hydrosphere, and lithosphere

c) the atmosphere, hydrosphere, and lithosphere

d) all the living things on Earth and the environment that supports them

Answer 1

b) all the living things in the atmosphere, hydrosphere, and lithosphere 

As living organisms live in the atmosphere, hydrosphere, and lithosphere, the biosphere is composed of all living things that inhabit all spheres of the Earth.