35. Soil

Which type of ecological succession requires soil to be formed before plants can grow?

Which of the following factors increases the rate of soil formation?

In most terrestrial ecosystems, which nutrients are most commonly limiting for plant growth?

Which plant is often used as a soil conditioner because it can improve soil fertility through nitrogen fixation?

Which of the following is not a nutrient that mycorrhizae help plants to obtain?

In the context of soil fertility, what is meant by a limiting nutrient for plant growth?

Soil texture refers to the relative amounts of ________ in soil.

Which process is primarily responsible for the formation of soil?

Which type of forest is likely to have the most nutrient-rich soil?