15. Why are diseases spread by pests in tropical areas likely to spread north in the US? O A. People are more likely to be bitten by mosquitoes when the temperatures are warm
B. The northern species of mosquitoes are more infective when the weather is warm.
C. Infected people spread diseases more readily when the temperatures are warm
D. Warming weather from climate change will cause tropical pests to spread outside of their current geographic region

Which process is involved in growing crops? irrigation transportation recreation condensation

What best describes lactic acid fermentation?

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).