1. Locard's exchange principle implies all of the following except a) Fibers can be transferred from one person to another.
b) Blood spatter can be used to identify blood type.
c) Cat hair can be transferred to your pants.
d) Soil samples can be carried from the yard into your home.

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).

Which component in a graph indicates an independent factor? a. y-axis b. x-axis c. scale

Which of the following types of stars are dim but can have high surface temperatures? giants main sequence stars supergiants dwarfs