Afarmer has applied a pesticide to control a pest population that is affecting her crops. the pest population has reacted as shown below.

which best describes the process that the pest population has experienced due to this environmental change?

a, genetic diversity
b. natural selection
c. natural resistance
d. genetic resistance

Answer;

-Natural selection;

Explanation;

-Natural selection is one of the basic mechanisms of evolution, along with mutation, migration, and genetic drift.

-Genetic diversity allows the different organisms to have different physiological characteristics. Some of them provides them with genetic resistance, others don’t. The ones which are resistant survive the pesticide, others don’t; this is called the natural selection. The ones which are resistant will live longer and have a larger offspring.

- From one generation to another, there will be more and more resistant pests (because of their larger offspring), and less and less unresistant pests (because they tend to die young). If the selection process goes on, someday the pesticide will be useless (it will kill no pest).

the correct answer is - d. china has a large and growing population.

the fact that china has a large (the biggest) population, and it is still growing, doesn't hinder the agriculture production in the country. in fact, it can for increased production in the agriculture, since there's more labor force, as well the sheer mass of people produces lots of scientists that come up with new inventions as to how to improve this sector. nice example is the inner mongolia region in china, in general dominated by the gobi desert, but few scientist came up with a nice idea as to how to make the region productive by using plants that are very resistant to droughts, so lots of people have been employed, and the region is becoming greener and greener each year, and the production of food in this region is also increasing.