What is one type of physical feature that can be used to describe locations on earth ?

What body of water is the second cataract of the nile river submerged under

The vegetation that thrives in the tundra is limited to a. mosses, barley, wheat, and corn. b. coniferous trees. c. dwarf shrubs, mosses, lichen, potatoes, and beans. d. mosses, lichen, algae, and dwarf shrubs.

Match the letters with the correct terms