Javier has found a beetle during a field study. he suspects that it might be a new species of beetle that no one has ever documented before. he takes the beetle back to his lab and examines it under a microscope. what does javier need to do so that he can accurately compare his beetle to known species of beetle? a. javier must carefully record and describe all of the characteristics of his beetle. b. javier must carefully record and describe the beetle's response to laser light. c. javier must collect some of the beetle's tissue so it can be cloned. d. javier must compare the beetle's foot speed to that of ant.

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 many pounds does the earth weigh?

How did the work of farmers and breeders in england influence the work of charles darwin