Answer:
It has gotten worse.
Explanation:
In the past 30 years, air quality in the United States has declined almost exponentially. Pollution is the main reason for the declination of air quality in the United States, but there are different kinds of pollution, including light pollution, noise pollution, air pollution, water pollution, etc. Air pollution can be caused by primary or secondary pollutants. Primary pollutants include carbon, nitrogen, and sulfur oxides as well as just general particles in the air. Secondary pollutants are formed when pollutants are exposed to sunlight via chemical reactions.
You kinda need to put something there? We don’t know what the choices are so there’s really no way we’d know what choice is an example of federalism
If you remove one light bulb in a series, the other will go out because a series only goes through one path of electricity
3. It's because of the heat underneath the crust of the Earth. Because heat rises, the molten rock and such underneath the crust rises to the top and then the movement underneath causes things on top to move.
4. Plates are the different sections that the lithosphere has been cracked into. These plates once all fit together as a giant plate called Pangaea.
5. An earthquake is a sudden, sometimes violent shaking of the ground, as a result of the shifting of tectonic plates, or volcanic eruption.
6. On the magnitude scale, earthquakes range from 2.5 or less (usually never felt but strong enough to be detected by seismograph) to 8.0 or higher. Causes extreme damage; enough to destroy whole cities at once if close enough to the epicenter.
7. Depends on what kind you're looking for. I'd look it up for your specific topic.
8. To apply a forces to something, usually resulting in a stretch.
9. The action of compressing something, to flatten or squeeze by pressure
10. A strain on the layers of something because of pressure, resulting in the shifting of those layers.
11. In areas undergoing extension or stretching. It's when the crust is extended.
12. The hanging wall drops relative to the footwall.
13. This is what happens when the hanging wall <u>rises</u> relative to the footwall. (The opposite of a normal fault)
14.
