Biosphere
The biosphere is the part of the Earth, including the air, land, surface rocks, and water, where you can find life. The Gaia hypothesis states that the biosphere is its own living organism.
CK-12 (Middle School)
ESSENTIAL QUESTION:
What defines the Earth's biosphere?
STANDARDS:
RST.1 - Analysis & Evidence
DEPTH OF KNOWLEDGE (DOK) LEVELS:
2
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