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Chapter 16 Lesson 4

Across
Does air pressure increase or decrease with altitude?
This the most abundant gas in Earth's Atmosphere.
This can be found in the stratosphere.
This plays a key role in Earth's weather in the troposphere.
Photosynthesis produces this gas.
Down
Auroras occur when these strike air molucules.
This layer helps protect Earth from meteorite collisions.
This is the layer farthest from Earth's surface.
The sun warms Earth's surface and it is radiated back to the troposphere this causes _____.
Air temperature would be lower or higher at the top of a mountain.