High-altitude cirrus clouds are primarily formed from which substance? A.
ozone molecules
B.
nitrogen compounds
C.
carbon dioxide gas
D.
solid ice crystals

D. Solid Ice Crystals

Explanation:

"Cirrus clouds are wispy, curly, or stringy. They are found high in the atmosphere—typically higher than 6,000 meters (20,000 feet)—and are usually made of ice crystals." -National Geographic

the answer is: metamorphic rocks often show the presence of fossils, also a

hope i

-lavira: )