An insect pest known as the medfly significantly reduced the orange crop on California. Pesticides were used to control the medfly. Using the concept of natural selection, explain how the continued use of a certain pesticide may become ineffective in controlling this fly. Your answer must include the concepts of
•Variation
•Adaptation
•Survival
•Reproduction

The overuse of any pesticide will make the pest develop immunity to it, by adapting to it.

Explanation:

Any insect pest that infects a cop is controlled by pesticides. These insect species show variation in the DNA of different forms that attack different crops but in general one crop has the same pest and is affected on by the pesticide much the same.

The overuse of the same pesticide however is detrimental for the humans. The pests eventually are able to adapt to the pesticide and develop an immunity against it for the survival of their species.

Then during reproduction they pass on this immunity to the offspring, making that particular pesticide useless.

9.9 years

a = p(1 + rt) . . account balance after time t at rate r starting with principal p

3000 = 2500(1 + 0.0202t) . . filling in the given numbers

1.2 = 1 + 0.0202t . . divide by 2500

0.2 = 0.0202t . . . subtract 1

0.2/0.0202 = t ≈ 9.901

it will take about 9.9 years for the account balance to reach $3000.

ur answer is e & d

explanation: