When the water level of a stream or river exceeds its natural banks, it has reached its
a. capacity.
b. flood stage.
c. crest.
d. plateau.

What is a main difference between a mixture and a pure substance? a mixture is only a liquid, but a pure substance can be in any state.a mixture looks the same throughout, but a pure substance does not.1 a mixture can vary in composition, but a pure substance has a set composlo a mixture can be made up of a single compound, but a pure substance car