What is the most abundant gas in the atmosphere?

A ozone

B water vapor

C oxygen

D nitrogen

What is a calorie? A Calorie?

How does the Coriolis effect influence ocean currents?

Very small concentrations are often reported in ppm. What does "ppm" stand for? What does it mean?

What is desalination?

The diagram below shows a wave. The features of the wave are labeled A, B, C, and $D$. Which label identifies the wavelength? C. $C$ D. D

What was the Bill of Rights?

I get it! Now I know that as the sun's energy nears Earth, the sunlight that is not absorbed or reflected by the atmosphere _____.

I need extra help with _____.

Which atmospheric layer protects Earth from harmful solar radiation?

The amount of water vapor in the air can differ from place to place.

INFER: What evidence do you see for your answer to Question $1$?

The San Andreas Fault is an example of what type of fault? a. normal fault b. strike-slip fault c. reverse fault d. thrust fault

I get it! Now I know that weather refers to the conditions in Earth's atmosphere at a particular time and place and climate refers to ______.

I need extra help with _____.

What action is taken when the flag is lowered?

I get it! Now I know the ozone layer protects Earth by ______.

I need extra help with _____.