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[ESM343] Based on a vertical profile of temperature, the layers consist of the troposphere, stratosphere, mesosphere, and -----------------------------------
thermosphere

[ESM343] ---------------------- is the fifth most abundant gas in the atmosphere
Carbon dioxide

[ESM343] ------------- is an instrument that measures humidity
sundial

[ESM343] Since 1750, methane concentrations in the atmosphere have increased by more than ----------------- %
150

[ESM343] --------------------- is held to the earth by gravity.
air

[ESM343] About -------------% of the total mass of the atmosphere is contained in troposphere
80

[ESM343] -------------------------- is caused by horizontal variations in air pressure
wind

[ESM343] ------------------ varies in concentration in the atmosphere both spatially and temporally
water vapour

[ESM343] ----------------------- is any form of water that falls from the atmosphere and reaches the ground
precipitation

[ESM343] ----------------- produces oxygen when carbon dioxide and water are chemically converted into glucose with the help of sunlight
Photosynthesis