They are arranged in shells
Answer:
I think it should be Carbon.
Groundwater is also one of our most important sources of water for irrigation from septic tanks and toxic chemicals from underground storage tanks and leaky landfills ... Drinking contaminated groundwater can have serious health effects. If there is a leak, these contaminants can eventually make their way down
The correct answer should be B.
The correct answer would be B.
A substance that undergoes change during a reaction, usually from coming in contact with another substance