WILL PICK BRAINEST As the population of a city recently grew , so did the number of cars and industries in the area. The local news started to post air quality warnings. What most likely caused the need for air quality warnings?

a-AS the population grew, more people wanted to know about air quality.
b-The removal of trees led to increased soil erosion
c-The level of carbon monoxide increased as people heated their homes.
d-More cars and industry led to increased carbon dioxide and nitrogen oxide emissions.

Cells destroy body cells infected by a virus or bacteria. killer t t memory t none of the above

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).

Match each phylum or class to its correct characteristic