This graph shows the effect of poison used weekly on mosquitoes over a period of eight months What is the most probable reason for the decreased effectiveness of the poison

-The poison was only sprayed once
-The poison chemically reacted with the DNA of the mosquitoes
-mosquitoes resistant to the poison lived and produced offsprings

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scientists have discovered that hiv does not cause aids by the virus's direct effect on the host's immune cells, but rather through the cells' lethal influence on one another. researchers from the gladstone institutes have revealed that hiv does not cause aids by the virus's

blue stars have the highest surface temp

stellar distances are usually expressed in light-years

the measure of a star's brightness is called magnitude

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i think the answer is b.