Question

what role does soil formation play in land ecosystems? it provides the basis for life on land. it is irrelevant to ecosystems. it only contributes to marine life.

Explanation:

Soil formation is crucial for land ecosystems. It provides a medium for plant growth, holds nutrients and water, and supports various organisms. The option "It provides the basis for life on land" aligns with this, while the other options are incorrect (soil is relevant to land ecosystems and not only for marine life).

Answer:

A. It provides the basis for life on land