Early Atmosphere and Oceans

Early Atmosphere and Oceans

Earth's atmosphere originated from volcanic outgassing and comet impacts and evolved through photosynthesis.

CK-12 (High School)

ESSENTIAL QUESTION:

How did the Earth's atmosphere and oceans form over time?
STANDARDS:
RST.1 - Analysis & Evidence, RST.4 - Key Terms

DEPTH OF KNOWLEDGE (DOK) LEVELS:

1,2
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