Since 1945,approximately 1,000 species of insects and rodents have ____ insecticides.

Question

Since 1945,approximately 1,000 species of insects and rodents have ____ insecticides.​

Quizplus · Accepted Answer

The sentence suggests that insecticides have had an impact on the population of certain species of insects and rodents, but not necessarily that they have become extinct or threatened. The use of the phrase "developed resistance to" indicates that over time, some species have become less susceptible to the effects of insecticides.

Since 1945,approximately 1,000 Species of Insects and Rodents Have ____