AP BIOLOGY

Detailed explanation-1: -The troposphere contains about 75% of all of the air in the atmosphere, and almost all of the water vapour (which forms clouds and rain).

Detailed explanation-2: -Winds in the stratosphere spread the aerosols until they practically cover the globe. Once formed, these aerosols stay in the stratosphere for about two years. They reflect sunlight, reducing the amount of energy reaching the lower atmosphere and the Earth’s surface, cooling them.

Detailed explanation-3: -The atmosphere is the blanket of gas that we call air that surrounds Earth. The atmosphere includes the rain that is falling through the air, clouds, and tiny suspended particles of dust (called aerosols) that are found in air.

Detailed explanation-4: -Stratospheric sulfur aerosols are sulfur-rich particles which exist in the stratosphere region of the Earth’s atmosphere. The layer of the atmosphere in which they exist is known as the Junge layer, or simply the stratospheric aerosol layer. These particles consist of a mixture of sulfuric acid and water.