The+Bald+Eagle



PASSAGE THREE (Question 3)

The Bald Eagle 1 When the bald eagle became the national symbol of the United States in 1782, soon after the country was born, it is estimated that there were as many as 75,000 nesting pairs in North America. By the early 1960s, however, the number of nesting pairs had been reduced to only around 450. 2 The demise of the bald eagle is generally attributed to the effects of the pesticide DDT (dichloro-diphenyl-trichloroethane). This pesticide was used to kill insects <range type="comment" id="565567469_9">harmful </range id="565567469_9">to <range type="comment" id="565567469_10">agriculture</range id="565567469_10">, <range type="comment" id="565567469_11">thereby </range id="565567469_11"><range type="comment" id="565567469_12">increasing </range id="565567469_12"><range type="comment" id="565567469_13">agricultural </range id="565567469_13"><range type="comment" id="565567469_14">production</range id="565567469_14">. One <range type="comment" id="565567469_15">unintended </range id="565567469_15">negative result of the use of DDT was that, while it did <range type="comment" id="565567469_16">get rid of </range id="565567469_16">the <range type="comment" id="565567469_17">undesirable </range id="565567469_17">insects, it also made its way along the food <range type="comment" id="565567469_18">chain </range id="565567469_18">into fish, a favorite food <range type="comment" id="565567469_19">source </range id="565567469_19">of the bald eagle. 3 The bald eagle is now <range type="comment" id="565567469_20">protected </range id="565567469_20">by federal <range type="comment" id="565567469_21">laws</range id="565567469_21">. It was originally <range type="comment" id="565567469_22">protected </range id="565567469_22">by the Bald Eagle <range type="comment" id="565567469_23">Act </range id="565567469_23">of 1940 and later by the <range type="comment" id="565567469_24">Endangered </range id="565567469_24"><range type="comment" id="565567469_25">Species </range id="565567469_25"><range type="comment" id="565567469_26">Act </range id="565567469_26">of 1973. However, it is not just the <range type="comment" id="565567469_27">laws </range id="565567469_27">directly <range type="comment" id="565567469_28">related to</range id="565567469_28"> endangered species that <range type="comment" id="565567469_29">aided </range id="565567469_29">in the <range type="comment" id="565567469_30">resurgence </range id="565567469_30">of the bald eagle; its <range type="comment" id="565567469_31">resurgence </range id="565567469_31">has also been <range type="comment" id="565567469_32">widely </range id="565567469_32"><range type="comment" id="565567469_33">attributed to</range id="565567469_33"> the <range type="comment" id="565567469_34">banning </range id="565567469_34">of DDT in 1972. Today there are more than 5,000 <range type="comment" id="565567469_35">pairs </range id="565567469_35">of bald eagles, a <range type="comment" id="565567469_36">tenfold </range id="565567469_36">increase over the <range type="comment" id="565567469_37">low </range id="565567469_37"><range type="comment" id="565567469_38">point </range id="565567469_38">of 450, and the bird was <range type="comment" id="565567469_39">removed </range id="565567469_39">from the list of endangered species in Јuly, 1999.

This passage discusses radical <range type="comment" id="565567469_40">shifts </range id="565567469_40">in <range type="comment" id="565567469_41">population </range id="565567469_41">that the bald eagle has undergone. · · · · Answer Choices (choose 4 to complete the chart): (1) the numbers of bald eagles were greatly reduced, at least in part due to the effects of a pesticide. (2) The legislation has had a positive effect on the number of bald eagles. (3) The bald eagle was named as the national symbol of the United States in the late eighteenth century. (4) Early in the history of the United States, there were huge numbers of bald eagles. (5) Two different pieces of legislation that affected the bald eagle were <range type="comment" id="565567469_42">enacted </range id="565567469_42">33 years <range type="comment" id="565567469_43">apart</range id="565567469_43">. (6) The federal government <range type="comment" id="565567469_44"><range type="comment" id="565567469_45">enacted </range id="565567469_44">legislation</range id="565567469_45"> specifically <range type="comment" id="565567469_46">designed </range id="565567469_46">to protect the bald eagle as well as to <range type="comment" id="565567469_47">outlaw </range id="565567469_47">the pesticide DDT.

（ 1), （ 4), （ 6 ）