Japanese beetles and gypsy moths were accidentally introduced into North America. The most probable reasons these insects have become serious pests in North America is that they(1 point)
Responses a b c or d
were bred by research scientists and are resistant to all pesticides
were bred by research scientists and are resistant to all pesticides
have few natural enemies and reproduce successfully
have few natural enemies and reproduce successfully
are affected by biological controls and feed on plants
are affected by biological controls and feed on plants
are protected by environmental laws and feed on other insects species