Eratosthenes determined the circumference of Earth by conducting an experiment. Put his steps in order as they correlate to the scientific method.
T
Conduct an Experiment: Measure the angle of a shadow at high noon
in Syene and Alexandria,
Make Observations: In Syene, the sun's rayfare vertical at noon. At
t the same time in Alexandria, the rays are 7.2 degrees from the
vertical
Draw Conclusions: The angle represents the amount Earth curves
11. between Syene and Alexandria. This is 1/50 of a complete circle and
1/50 of Earth's circumference.

Cells tend to have a relatively small and uniform size. why aren’t cells larger?

Abnormal softening of a gland is known as

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).