I can be found in layers, rich with life yet invisible, I support ecosystems without being seen. What am I?

Category: Geography · Difficulty: hard

Hint: Think of what nourishes life from beneath.

Answer

Soil profile

Explanation

A soil profile consists of layers that provide nutrients and support various ecosystems underground.

This is a hard geography riddle — a tricky one that takes a little thought. The answer is Soil profile.

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