It's gets colder, wetter, and not much sun is received.
I believe the answer is "D"
Answer: As altitude increases, atmospheric pressure decreases
Explanation:
Atmospheric pressure 
is defined as the force 
per unit area 
the air that forms the atmosphere exerts on the Earth's surface:
It should be noted that as the altitude increases less air is above and, therefore the air weights less. This is because the atmosphere losses density as we ascend, causing less air.
However, it is important to point out this decrease in pressure is not linear, since at the beginning (in the first kilometers above sea level) it reduces more rapidly than in the next kilometers above. That is why this relationship between atmospheric pressure and altitude is exponential.
Answer:
Mountain, Canyon, Delta
Explanation:
The uppermost box would be mountain.
The box below that one would be canyon.
And the farthermost box to the right would be delta.
If you thought about it, changing those circles to make them 3D is like stacking layers on top as they get smaller, this would form something that looks like a mountain.
Water typically runs through a canyon and the lines appear to be separating for the water.
Deltas are wetlands that form from rivers emptying their water into another body of water. If you were to look up an image of a delta that would make it easier to understand, it also looks like what the image provided is trying to demonstrate.
