![Biology](/tpl/images/cats/biologiya.png)
Biology, 27.04.2021 15:40, skwmks8924
DDT is an insecticide that was used extensively in the mid-1900s to kill mosquitoes. It was very effective at first, but after a few decades DDT became less effective at killing mosquitos because many populations has evolved resistance to DDT. Which of the following conditions would biologists say was required for the evolution of DDT resistance in a population?
A) A few mosquitos in the population were resistant to DDT before it was ever used.
B) Mosquitoes in the population learned to adapt to the high levels of DDT in the environment.
C) The mosquitos population needed to evolve DDT resistance in order to avoid extinction.
D) Exposure to DDT caused specific, nonrandom mutations for DDT resistance within the population.
![answer](/tpl/images/cats/otvet.png)
Answers: 2
Other questions on the subject: Biology
![image](/tpl/images/cats/biologiya.png)
Biology, 21.06.2019 20:00, divagothboi
Which type of neuroglia is found outside of the brain?
Answers: 3
![image](/tpl/images/cats/biologiya.png)
Biology, 22.06.2019 02:00, naomicervero
Select the correct answer from each drop-down menu. in an experiment, dr. travis examined the effects of calcium intake on osteoporosis, a condition that causes an increased risk of bone fractures. the amount of calcium is variable. the risk of bone fractures .
Answers: 3
![image](/tpl/images/cats/biologiya.png)
Biology, 22.06.2019 05:50, Kittylover65
Which of the organisms listed below performs nitrogen fixation? a. legumes b. plants c. bacteria d. fungi
Answers: 2
Do you know the correct answer?
DDT is an insecticide that was used extensively in the mid-1900s to kill mosquitoes. It was very eff...
Questions in other subjects:
![Konu](/tpl/images/cats/mat.png)
Mathematics, 26.05.2021 04:10
![Konu](/tpl/images/cats/mat.png)
Mathematics, 26.05.2021 04:10
![Konu](/tpl/images/cats/en.png)
![Konu](/tpl/images/cats/istoriya.png)
![Konu](/tpl/images/cats/mat.png)
![Konu](/tpl/images/cats/en.png)
![Konu](/tpl/images/cats/istoriya.png)
![Konu](/tpl/images/cats/mat.png)
![Konu](/tpl/images/cats/mat.png)
![Konu](/tpl/images/cats/himiya.png)
Chemistry, 26.05.2021 04:10