A. are not used to the local environment
B. never get along well with other native species in the same environment
C. tend to do harm to exotic species
D. have been part of a given biological landscape for a long period
A. do no harm to native species and the local environment
B. may kill native species for food
C. always share the environment peacefully with native species
D. help to make the local environment more ideal to survive
A. whale population was the most crowded in marine life
B. whale hunting was illegal
C. whale population increased dramatically
D. whaling was not restricted
A. are not popular in Asian markets
B. are never in the trade of animal parts
C. are used for making traditional medicines
D. cannot be found in Asian markets
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