Please I need help, it's my homework for today and I don't understand

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.

Use your vocabulary words to complete the sentences below. australia and new zealand are in nature meaning they are located between temperate and tropical climates. oceania, on the other hand, has a tropical climate with numerous island chains, many of which are home to , which are islands made from coral. this entire region rests on the edges of plates, and therefore they are prone to earthquakes, volcanoes, and tsunamis. since most of the islands were formed from volcanoes, rock can be found everywhere.

Approximately how close is russia to alaska ? a.5 miles b.50 miles c.500 miles d.5000 miles