Mutation I believe is the answer
Inference
you have to have 20 letters so I'll type this random text :))
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
The creosote bush has two significant adaptations that allow it to survive for prolonged periods without water. The first adaptation is its small, waxy leaves which minimize the amount of water that evaporates from them. The second adaptation is its wide, shallow network of roots that captures as much water as possible when it becomes available. Hope this help you.