Earth's Outer Layers

Earth's Outer Layers

Earth has four layers: atmosphere, hydrosphere, biosphere, and lithosphere.

CK-12 (Middle School)

ESSENTIAL QUESTION:

What layers of the Earth make up its exterior?
STANDARDS:
RST.1 - Analysis & Evidence, RST.4 - Key Terms, RST.6 - Author's Purpose

DEPTH OF KNOWLEDGE (DOK) LEVELS:

2
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