The tundra is a cold, dry (1)______(tree) region with very cold temperature and little rain. One of its most (2) ______(distinct) characteristics is the (3) _______(permanent) frozen layer of ground called permafrost. (4)________(surprise), these extreme conditions can support a wide (5) _______(vary) of wildlife. In fact, several groups of Inuit people live there, relying on hunting and fishing for their (6) ________(survive). The animal life includes such species as arctic foxes, reindeer, wolves and seals. In spring, (7) ______(colour) flowers cover the ground. The snow offers (8)________(protect) to such plants, allowing them to resist the cold temperatures. However, it is (8) _________(possible) for trees and larger plants to live in this environment. The tundra is extremely fragile, so any changes caused by increasing temperatures and high (9) ________(pollute) levels will have (10)_________(consider) effect on the environment. We need to safeguard this delicate environment for the future.