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13 questions
What is the passage mainly about?
The fish-eating bird
The blue baby syndrome
The impact of non-biodegradable chemicals
Contaminated animals and the diseases they suffer from
The word “lavishly” in line 4 is closest in meaning to _______.
periodically
carefully
plentifully
frequently
The word “these” in line 4 refers to _______.
animals and plants
farms
yards
substances
Why does the author compare the DDT levels in ospreys to those in the fish they eat?
To prove the increase of the chemical concentration in the food chain
To discuss the high levels of DDT in animals living in the sea environment
To suggest absorption of chemicals into the tissues or organs of animals
To explain the contamination of animals with non-biodegradable chemicals
The word “those” in line 12 refers to _______.
animals
plants
DDT levels
ospreys
What is the comparison of DDT levels in ospreys and in plankton?
50 to 1
1 to 50
600 to 1
1 to 600
All of the following are mentioned as non-biodegradable pollutants EXCEPT _______.
(A) chlordane
(B) DDT
(C) drinking water
(D) nitrate
Which of the following is NOT mentioned in the passage?
(A) Insecticides can cause water pollution.
(B) Animals cannot take in non-biodegradable chemicals.
(C) Some chemicals cannot break down.
(D) Animals at the top of food chains can die of contamination.
What is the percentage of wells in America being contaminated by pesticides?
(A) 10 percent
(B) 14 percent
(C) 50 percent
(D) 60 percent
What is the author’s purpose in writing the passage?
(A) To inform the reader about the causes of animal diseases
(B) To compare the effects of chemicals on plants and animals
(C) To explain the danger of non-biodegradable chemicals
(D) To provide examples of dangerous chemicals
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