Answer: D. It can melt to a depth of a few meters in summer, then refreeze in winter.
Explanation:
Permafrost is ground which remains frozen for two or more years. Permafrost consists of soil, rock and sand fused together by ice. Mostly found in areas in high altitude, the Arctic, Antarctica, it is common in periglacial environments where temperatures are below freezing
.
The topmost layer of permafrost can melt in summer and refreeze in winter. This thawing and refreezing produces a ground pattern called columnar joints similar to the one formed when molten lava cools.
I believe that it is Olmec.
Answer:
A≈907.92in²
Explanation:
A=πr2=π·172≈907.92028in² hope this helps ;)
The Natives who were able to tame the Salt and Gila Rivers were known as the <u>Hohokam</u>.
<h3>Who were the Hohokam?</h3>
- They were a Native American civilization that lived in the North American Southwest.
- They constructed extensive irrigation works to use the waters of rivers.
The Hohokam were in dry areas and yet needed water to grow crops and survive. They therefore constructed some complex and extensive canals to channel water to their settlements and farms.
Find out more on the Hohokam at brainly.com/question/5798355.
