In an area where DDT had been used extensively, the population of birds declined because…?
A. The birds stopped laying eggs
B. The snakes ate the eggs
C. The eggs laid by the birds did not hatch
D. The DDT spray killed all the birds
Answer:C
In an area where DDT had been used extensively, the population of birds declined because…?
A. The birds stopped laying eggs B. The snakes ate the eggs C. The eggs laid by the birds did not hatch D. The DDT spray killed all the birds