Which of the following are true regarding ionosphere? I. It is the uppermost layer of atmosphere II. The molecules and atoms of nitrogen and oxygen in this layer absorb a part of solar radiation and become ionized III. This layer is responsible for reflecting back the radio wave transmitted from the earth

Answer: Option C

The following that are true regarding ionosphere are The molecules and atoms of nitrogen and oxygen in this layer absorb a part of solar radiation and become ionized and This layer is responsible for reflecting back the radio wave transmitted from the earth.