Question

In Town A, the water has heavy metal Q, and the residents who drink it have long-term kidney damage. In Town B, the water has heavy metal Q and X, and the residents who drink are healthy. What conclusion can be made about the two metals?

One metal causes an acute effect, compared to the other.
Both metals cause an acute effect and not a chronic effect.
The heavy metals have a synergistic relationship when combined.
The heavy metals have an antagonistic relationship when combined.

Answer 1

am i right with D?

Answer 2

@rylee88

Answer 3

Well if Q and X are combined the water is safe to drink

Answer 4

@astrid1