B. Choose the letter of the correct answer.

1. Which of the following is an abiotic factor in a biome?

a. the kinds of trees c. the average temperature

b. the number of insect species d. the mosses and algae

2. Which of the following is a biotic factor in a biome?

a. the quality of soil c. the presence of ponds and lakes

b. the amount of rainfall d. the kinds of grasses

3. What is permafrost?

a. dry desert soil c. ice on the tundra

b. muddy soil d. soil that is always frozen

4. Which of the following biome has mosses, lichens, and low growing shrubs in the

warm season?

a. tundra c. grassland

b. desert d. forest

5. Which of the following biome has extremely inhospitable conditions, with the

lowest measured temperatures of any of the five major biomes?

a. tundra c. grassland

b. desert d. forest​