Asked by SELENITAA

Which gas is a source of natural groundwater pollution?

A. Oxygen
B. Radon
C. Hydrogen
D. Carbon

i think its a
Answered by Ms. Sue
Oxygen is a polluter? I don't think so!
Answered by Anonymous
Which gas is a source of natural groundwater pollution?

A. Hydrogen
B. Oxygen
C. Carbon
D. Radon


Answered by Anonymous
Which of the following is not a type of mass movement that results from the force of gravity?

A. Deflation
B. Creep
C. Mudflow
D. Landslide

Answered by Candi
the answer is D. Carbon
Answered by kristina
well its not D. for sure cuz I took the Penn Foster test and it was wrong.

There are no AI answers yet. The ability to request AI answers is coming soon!