The Atmosphere's Layers

Which layer of the atmosphere is closest to Earth's surface?

What is the highest layer of the Earth's atmosphere?

Which layer of the atmosphere contains the air necessary for photosynthesis?

Which layer of the atmosphere has the highest air temperature?

What is the main gas found in the troposphere?

Which layer of the atmosphere is responsible for communication and travel around the world?

What happens to the air temperature as one goes higher in elevation in the troposphere?

Which layer of the atmosphere is the highest that jets and airplanes can reach?

Where are most of the Earth's weather and clouds generated?

Which layer of the atmosphere is the coldest?

Which layer of the atmosphere contains the Earth's ozone layer?

Which layer of the atmosphere is home to all Earth-orbiting satellites?

Which layer of the atmosphere gradually becomes cooler the further away from the Earth's surface one travels?

Which layer of the atmosphere is affected by human activity and can experience ozone depletion?

Which layer of the atmosphere is the home to the International Space Station and other orbiting satellites?