<span>the answer is demographer</span><span /><span>
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The application of one chemical for a long time causes the pest to build resistance against that chemical.
The regular application of DDT chemical and not changing the pesticide build resistance in the population of boll weevils because regular application of one pesticides creates resistance in the insects or pest which causes in the decrease of its effectiveness against the pest or insect. The farmers should apply DDT at one season or year whereas the other chemical in the second season or year in order to avoid the production of resistance in them.
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Adrenaline is known as the emergency hormone because it is released by the adrenal glands under the conditions of stress or excitement.
Answer:
I'm confused, what's the question here.
Explanation:
Answer:
the role of DNA helicase is to unwrap DNA and spread it.
or unwind the DNA at the replication fork.