Ecosystem and biomes

• grass
• mouse
• snake
• hawk

• tundra
• desert
• rain forest
• savannah

• elk
• rainfall
• soil
• mountains

• f
• g
• h
• j

• a
• b
• c
• d

• A
• B
• C
• D

Which biome is characterized by low temperatures and low amounts of rainfall?

• tundra
• desert
• temperate deciduous forest
• tropical rain forest

Which biome covers most of the land mass near the Earth's equator?

• tundra
• desert
• grassland
• tropical forest

Which biome, because of its climate, has the largest number of species of plants and animals?

• tundra
• desert
• rain forest
• pine forest

One characteristic feature of tundra is that only the surface thaws in the summer and refreezes in the winter, leaving a layer of permanently frozen subsoil.  This characteristic is known as

• glaciation
• permafrost
• crystallization
• soilfrost