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In the 1940-1950's, DDT was used on crops to control pests. The DDT entered the water and was absorbed into the food chain of the Eagle. DDT would then enter the Eagle's systemm and it would cause them to lay eggs that had weak shells. The shell would break before the eaglet had time to hatch, thus reducing the population and threatening their extinction.
Wiki User
∙ 15y ago
Wiki User
∙ 14y agoThe DDT gets sprayed on the bugs. The small fish eat the bugs and the DDT goes inside of them. The bigger fish swallow the smaller fish they get DDT inside of them too. When the bald eagle swoops down to get it's fish it eats the fish and also contains DDT. DDT in the bald eagle will cause egg thinness and crack. The bald eagle population will then go down.
Wiki User
∙ 15y agoIt resulted in a structural weakness in the eggs shell that limited reproduction.
Wiki User
∙ 13y agoYes, DDT does effect Bald Eagles. It is a poisen that gets in too the food chain, which in turns affect each and every animal that comes in contact with it.
Wiki User
∙ 12y agoIt is a pesticide. It caused the eggshells to be too thin to hatch. Now that it is banned, eagles have come back strong.
Wiki User
∙ 6y agoWeak egg shells.
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