The are a geologically old mountain range folded and deformed during the Paleozoic. The are a geologically old mountain range folded and deformed during the Paleozoic. Appalachians in the eastern United States Rockies in the western United States Cascades in the northwestern United States Alps in Europe

Appalachians in the eastern United States

Explanation:

These old mountains date back to 480 million years ago. These mountains were modified by plate collisions. The effects of plate collisions are still seen even today.

desert perennials often survive by remaining dormant during dry periods of the year, then springing to life when water becomes available. most annual desert plants germinate only after heavy seasonal rain, then complete their reproductive cycle very quickly.

a scenario where a cell may be needed to perform a form of endocytosis is when transporting large molecules. a scenario where a cell may be needed to perform a form of exocytosis is when releasing the large molecule from the cell.