Biology

River

18 June, 23:33

PH 6.5, pH 6.0, pH 55, pH 5.0 pH 45 pH 4.0

3

Trout

Effect of Environmental Change on Organisms/Populations Question

(8.11B):

The graph below shows the pH tolerance level for different organisms

in a freshwater ecosystem. What would most likely happen if the pH

of the pond water dropped from 5.5 to 4.5?

Bass

Perch

Frogs

Salamanders

Clams

Select one:

Crayfish

Snails

Mayfly

O

The populations of all organisms would increase.

O

The populations of most organisms would decrease.

O

The populations of one or two organisms would decrease.

O

The populations of most organisms would not change.