Answer:
pests can evolve defenses against pesticides over time
Explanation:
Pesticides are chemicals employed to kill pests generally. With continuous and indiscriminate use of pesticides, they become less effective because pests population often evolve a defense mechanism against them.
<em>With each usage, more and more pest population survive. Those that survive gradually multiply and pass the survival gene to their offspring eventually giving rise to a population that is genetically insusceptible to the effects of the pesticide. This is generally referred to as evolution by natural selection.</em>
Isotonic is a solution that is equal in water and solutes hypertonic solution is a solution that contains a lot of solutes then the hypotonic solution is a solution that has very little solutes
The answer would be B, because the other ones wouldn’t even make sense.
Answer:
We can tell that extinctions have occurred in the past by looking at fossils in layers of sediments. If the amount of fossils found match you can infer that they are the same organism and they are extinct. If you can't match up the bones with any animal today.
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Answer:
Explanation:
The bacteria multiply rapidly, causing the appendix to become inflamed, swollen and filled with pus.
