Answer:
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
Answer:
Explanation:
I think answer should be the first one
Movement of Na+ and K+ in neurons are active transport during stimulation.
The rock formations in the Rocky Mountains and Great Plains is said to be different yet have similar amounts of certain minerals because the rock of Rocky Mountains is igneous rock while the rock of the Great Plains is sedimentary rock, Though the rocks may have some certain amount of minerals but they are formed in different ways.
When sediment is firmly pressed and cemented together, it leads to formation of sedimentary rock but when Magma cools it form igneous rock when it's hardens.
Hopes this helps!