1. Which gas is a source of natural groundwater pollution?

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

2. A stream channel is formed when water
A. carves a very deep and wide channel into rock.
B. carries minerals into the ocean.
C. creates a depression, which forms a lake.
D. carves a narrow path into rock.
D?

3. How many chemical reactions are possible regarding the formation of carbonic acid and the dissolving of calcite?
A. 3
B. 10
C. 23
D. 2
A?

5 answers

#1 is A
#3 is D
idk about #2

I tried with the Answers you gave me the first time I submitted the test but it told me it is incorrect. I thought those were correct as well..

Well, that's ridiculous... I'm sorry! But those answers would make sense..

Is this 8th grade connexus?

hey I'm from there