In the early 1900s, oyster fishermen cut sea stars (starfish), which are predators of oysters, into pieces and threw them back into the sea. This practice led to an explosion in a. other sea stars ate the pieces and were able to increase their reproductive output. b. each arm with a portion of the central disc regenerated into a new individual. c. competition was removed from the stronger sea stars that were not caught, increase their reproductive output. d. the oyster population grew due to this new food supply, allowing the population of their predators to increase. e. each arm could form a new individual through budding.

Drag each label to the correct location on the table. each label can be used more than once. decide whether each statement describes saturated fat, unsaturated fat, or both saturated and unsaturated fats.

What are some characteristics of a free enterprise economy?

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).