1. atmosphere
2. biosphere
3. cryosphere
4. lithosphere
5. hydrosphere
A) It's all the ice.
B) It's very gassy up here!
C) It's the sand, rock, or the big mountaintop.
D) It's you, me, the dog across the street, and the tree in the front yard.
E) It's the dark, deep, blue seas and oceans.