An unconformity is found in a geologic cross section. What does this indicate happened in this area? Question 21 options: An earthquake occurred along a fault line. New sediment was deposited. Tectonic forces deformed the rock. Wind and rain caused erosion.

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).

How far down have geologists drilled holes ? (science) a: 3.8 km b: 12 km c: 100 m d: 1200 km

Which of these is not a function of some membrane proteins? a. keeping the cell from dissolvingb. transmitting messages to cell organellesc. catalyzing chemical reactions in the celld. allowing ions to enter the cell