Early 1800's. The Erie Canal was built in 1817
Latitudes and the earth's radius are used to measure distances.
Answer:
When a warm air mass moves into an area of cooler air, the boundary between the air masses is called a warm front. The warmer, less-dense air slides up over the cooler, denser air in a wide, gentle slope. As the warm air cools, its relative humidity increases, and the water vapor condenses into clouds.
Explanation:
Answers:
- A line in which two plates move in opposite directions from another is known as a divergent plate boundary.
- A line in which one oceanic plate subducts underneath another oceanic plate is called an ocean-ocean convergent plate boundary.
-A line in which two plates slide horizontally past each other is called a transform-fault boundary.
-A line in which an oceanic plate subducts underneath a continental plate is an ocean-continent convergence.
-A line at which a continental collision occurs is known as the continent-continent convergence boundary.
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