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markenkenmakenk markenkenmakenk
wrote...
Posts: 43
Rep: 3 0
7 years ago
a. a favourable change in the DNA of the insects
b. the food source of the insects
c. chance and will not occur again
d. the insecticide DDT
Read 196 times
1 Reply
-Ken
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Answer accepted by topic starter
bio_manbio_man
wrote...
Educator
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Posts: 33233
7 years ago
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