Answer:
A. soil excavation and disposal. thank you for the answer :)
BECOMES LESS LIKELY BECAUSE THE TWO GENE POOLS REMAIN SIMILAR
Some of the features that are associated with the emptying of lakes formed during glacial time include the following:
The Bonneville salt flats of Utah, the channelled scabland, the enormous potholes carved into bedrocks and enourmous ripples hundred of feet high. All these are product of flowing ice and melted water. They are usually found in glaciated areas.<span />
Out of the following given choices;
(1) an increase in the number of clams
(2) a decrease in the number of water plants
(3) an increase in the number of crabs
(4) a decrease in the number of crayfish
The answer is D. Crayfish are are freshwater crustaceans resembling small
lobsters. Clams and crabs are found in marine waters. Most crayfish cannot
tolerate polluted water. Crayfish feed on animals and plants, either living or
decomposing, and detritus, therefore a decrease in small invertebrates in the river
would decrease their food source thence
consequently affect their numbers.
