Answer:
There are two reasons: at higher altitudes, there is less air pushing down from above, and gravity is weaker farther from Earth's center. So at higher altitudes, air molecules can spread out more, and air density decreases
After asking your question, if more than one person replies, you can see which one is most accurate for you and mark their reply as the most brainliest answer
Gulf coastal plain is the plain that extends along the gulf

<u>There are three main types of reservoirs; valley-dammed reservoirs, bank-side reservoirs, and service reservoirs. Valley-dammed reservoirs are created in valleys between mountains. Usually, there is an existing lake or body of water.</u>
The moon's gravity causes 4 tides every 24 hours. It causes one low and high tide in the morning as well as one low and high tide in the evening.