If bed bugs had never been exposed to DDT in the 1950's and 1960's, how would you expect that to affect bed bugs' resistance to pyrethroids during the last decade?
A) Because bed bugs reproduce so rapidly, resistance to pyrethroids among bed bugs has become a major problem .
B) With the widespread use of DDT, pesticide-resistant mutations became much more common among bed bugs. The bed bugs passed that resistance on to future generations.
C) If some of the bed bugs carry the resistance mutations, those insects will be better able to survive and reproduce and will wind up passing the mutation on to their offspring.
D) Without the use of DDT, natural selection would not have favored any mutations that provided protection from pesticides; bed bugs would be more susceptible to today's chemicals.

Liquid water turns into water vapor at which step in the water cycle

The kidney filters potentially toxic substances in the blood, and thus “clears” the blood of those substances. this clearance function is dependent upon and proportional to the diffusion gradient of the substance across filtering capillaries, i. e. if the concentration of the substance is doubled, twice as much will be cleared from each ml of blood that is filtered. suppose that the body produces a constant amount of a substance x per unit of time. the kidneys eliminate substance x at a rate directly proportional to the concentration of the substance and the volume of blood cleared each minute (c): elimination = c × [x], where [x] is the steady-state concentration of substance x. imagine an individual with an initial concentration of x equal to [x]0 who develops kidney disease. her baseline clearance c0 drops to one half of the original (½c0). what is the new steady state concentration of x? (for simplicity, assume that substance x is 100% filtered by the kidney).

When proteins are being produced by a cell, scientist say that the genes are question 2 options: activated turned off replicated deactivated