Question

This sphere is the layer of Earth that contains a mixture of gases.

hydrosphere
atmosphere
lithosphere
biosphere

Answer 1

This sphere is the layer of Earth that contains a mixture of gases... (atmosphere)

Answer 2

The answer to the question is atmosphere. The atmosphere is the spherical layer of Earth that contains a mixture of gases that are necessary for life on Earth. The atmosphere helps insulate the Earth's temperature as well as getting out some of the harmful things from outer space like filtering out harmful UV radiation from the Sun and burning up meteorites.