Three students measured the height of a lab table, each using a different meter stick. one student reported a height of 98 cm, another reported a height of 99 cm and the last student reported a height of 70 cm.
the most likely explanation for the difference in the reported heights is that one
a) student improperly read the meter stick
b) meter stick was metal and the other meter stick was wood
c) student viewed the meter stick from a different angle
d) meter stick was constructed with nonstandard cm marks

Is there any solid scientific evidence that humans have been cloned?

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).

Witch theory suggests all living things are made up of cell or cells