2. What happens to atmospheric pressure in
the troposphere with increasing altitude?
a. It gets thicker. C. It increases.
b. It gets warmer. d. It decreases.

The point where two air masses meet is called a

Plants can have a positive and negative effect on the rate of weathering

[ou.01jthe greatest speed with which any physical object moves is 300,000 km/soundsec. which of the following has a speed of 300,000 km/sec? a.light in water b.light in vacuum c.sound in air. d. sound in water