Which of the following pools contain the largest amount of the world's carbon?

Which of the following pools contain the largest amount of the world's carbon?
 
  A) vegetation B) animals C) atmosphere D) soil

Question 2

Earthworms generally are most abundant in sandy, acid soils typically under coniferous forest vegetation.
 
  Indicate whether the statement is true or false

Question 3

The deeper that they are placed in the soil, the more rapidly organic compounds such as pesticides are decomposed by the soil microflora.
 
  Indicate whether the statement is true or false

Question 4

Soil microorganisms often compete with higher plants for mineral nutrients, such as nitrogen.
 
  Indicate whether the statement is true or false