Answer:
is that the one i answered already...
Explanation:
Answer:
I think it might be d. phosphorus deficiency
When animals, plants and other organisms die, they typically decay completely. But sometimes, when the conditions are just right, they're preserved as fossils.
Co2 levels stay the same then drop when there's sunlight.<span />
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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