What Effect of Pesticides on Birds Can Be Interpreted from the Graph

question 29

Multiple Choice

What effect of pesticides on birds can be interpreted from the graph below?

• A)DDE (a breakdown product of DD
• T)residue in bird eggs has a negative correlation with reproductive success - when DDE residues are high the number of young per breeding season was low.
• B)Even though DDT was banned in 1972, reproductive success of birds has yet to improve.
• C)The graph provides evidence of how DDT bioaccumulates and biomagnifies in birds.
• D)DDT causes acute toxicity in birds.

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