Hii! i’ll give brainliest pls help

Amountain is larger than a hill, with steep sides true or false

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.

Hey, i was what is consisted in a sustainable city? like what unique designs they have, etc. for answering ; )