Read the paragraph from “Peregrine Falcon.” (9) Scientists at the U. S. Fish and Wildlife Service’s Patuxent Wildlife Research Center near Laurel, Maryland, began investigating the peregrine’s decline. They found unusually high concentrations of the pesticide DDT and its breakdown product DDE in peregrine falcons and other birds of prey. The peregrines accumulated DDT in their tissues by feeding on birds that had eaten DDT-contaminated insects or seeds. The toxic chemical interfered with eggshell formation. As a result, falcons laid eggs with shells so thin they often broke during incubation or otherwise failed to hatch. Because too few young were raised to replace adults that died, peregrine populations declined precipitously.

Which two transitions are most helpful in determining the organizational structure of the paragraph?

Select all that apply.

Peregrine Falcon