Answer: a Volcanoe
What it is are openings, or vents where lava, tephra (small rocks), and steam erupt on to the Earth's surface.
Subtropical waters are typically more saline than equatorial waters because of the bigger temperature and much lower precipitation.
The precipitation manages to lower the salinity on the surface of the water even create ''pools'' with fresh water in the middle of the saline water. In the equatorial region there's rain almost every day, so the salinity is lower, while in the subtropical regions there's seasonal rain and it is in much lower amount, the temperature is higher which makes the water evaporate more and the salt to be more concentrated, thus the higher salinity.
Answer:
Yellowstone National Park
Explanation:
That point is located in Yellowstone National Park, about 1000 ft NW of the Old Faithful geyser, 280 ft north of the continental divide trail, and about 400 ft from the Old Faithful Basin Gift Shop.
The area is relatively flat at an elevation of about 7360 feet.