SOLAR SYSTEM

Detailed explanation-1: -So, the correct answer is: f The mesosphere contains fewer oxygen molecules than the stratosphere.

Detailed explanation-2: -Stratosphere-The layer above the troposphere at a distance between 10-50km above the earth’s surface. It consists of the ozone layer which protects the earth from ultraviolet rays of the sun. Mesosphere-The layer above stratosphere at a distance between 50-80km above the earth’s surface.

Detailed explanation-3: -Both the stratosphere (next layer down) and the mesosphere are considered the middle atmosphere. The transition boundary which separates the mesosphere from the stratosphere is called the stratopause.

Detailed explanation-4: -Earth’s atmosphere has five major and several secondary layers. From lowest to highest, the major layers are the troposphere, stratosphere, mesosphere, thermosphere and exosphere.

Detailed explanation-5: -The mesosphere is the coldest layer of the atmosphere and decreases in temperature with altitude. It gets so cold that clouds called noctilucent clouds are composed of ice crystals. The coldest portion of the mesosphere is the mesopause which is the boundary that separates the mesosphere from the thermosphere.

Detailed explanation-6: -The stratosphere is where you’ll find the very important ozone layer. The ozone layer helps protect us from ultraviolet radiation (UV) from the sun. In fact, the ozone layer absorbs most of the UV radiation the sun sends to us. Life as we know it wouldn’t be possible without this layer of protection.

Detailed explanation-7: -The troposphere starts at the Earth’s surface and extends 8 to 14.5 kilometers high (5 to 9 miles). This part of the atmosphere is the most dense. Almost all weather is in this region. The stratosphere starts just above the troposphere and extends to 50 kilometers (31 miles) high.