atmosphere biosphere hydrosphere lithosphere
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: Removing the coal from Earth's crust can change the structure of the crust, release methane gas, and contaminate groundwater with heavy metals. Which of Earth's subsystems is most likely to be affected by all these consequences?
Possibilities:
- atmosphere
- biosphere
- hydrosphere
- lithosphere

biosphere