The correct answer is: B. Ionosphere
The ionosphere is a region of Earth’s atmosphere that is ionized by solar radiation. It extends from about 50 to 1,000 kilometers above the Earth’s surface. The ionosphere is important for radio communications because it reflects radio waves back to Earth. This allows radio signals to travel over long distances.
The ozonosphere is a region of Earth’s stratosphere that absorbs most of the Sun’s ultraviolet radiation. It is located between 10 and 50 kilometers above the Earth’s surface. The ozonosphere is important for life on Earth because it protects us from the harmful effects of ultraviolet radiation.
The stratosphere is the second layer of Earth’s atmosphere. It extends from the troposphere to the mesosphere. The stratosphere is characterized by increasing temperature with altitude. This is due to the presence of ozone, which absorbs ultraviolet radiation from the Sun.
The mesosphere is the third layer of Earth’s atmosphere. It extends from the stratosphere to the thermosphere. The mesosphere is characterized by decreasing temperature with altitude. This is due to the lack of ozone and other greenhouse gases.