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.
<span>50 to 1,000
A galaxy cluster contains anywhere from 50 to 1,000 galaxies. These are extremely large and hold millions of planets. So amazing!
I hope this helped. Have a great night!</span>
I believe the incorrect statement is A.
Answer:
Fewer methamphetamine labs are being operated and/or discovered in the United States.
Explanation:
Although it is difficult to establish a definite conclusion without more information, from what we do know there are few seizures of methamphetamine labs. This could be due to a reduced presence of attempted seizures, to an overall decrease in the number of labs, to more efficient means of hiding the labs from the authorities or to the increased importation of finished products from other countries.
