Desert

1
Desert

• A dry, often sandy region of little rainfall,
  extreme temperatures, and sparse vegetation

2
Environment

• The circumstances or conditions that surround one

3
External

• happening or arising or located outside or beyond
  some limits or especially surface

4
Hibernation

• a state of inactivity and metabolic depression in
  animals

5
Migration

• the movement of persons from one country or
  locality to another

6
Physiology

• the branch of the biological sciences dealing
  with the functioning of organisms

7
Taiga

• the boreal forest, is a biome characterized by
  coniferous forests

8
Tropical Rainforest

• earth's most complex biome in terms of both
  structure and species diversity.

9
Tundra

• biome where the tree growth is hindered by low
  temperatures and short growing seasons.