AnswersPT-GSE Environmental Science B-IC – 81Biogeochemical Cycles in Ecosystems-Standard Bio 1.3Question 8
8
QuizMultiple Choice

Biogeochemical Cycles in Ecosystems-Standard Bio 1.3

Question 8 • PT-GSE Environmental Science B-IC – 81

What protects Earth's surface?

Answer
A
the atmosphere
B
the hydrosphere
C
the geosphere
D
the biosphere
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