Some people argue that human actions have caused and will continue to cause harm to earth’s environment. they believe that we as a people are not responsible stewards of humankind and that our actions will lead to the destruction of life on earth. other people argue that although our technological advancements may have caused environmental changes, these advancements have made general living conditions (extended lifespan, improved medical care, and knowledge transfer, for example) better for most people. therefore, we as a people are being responsible stewards of humankind based on the information presented in this unit, respond to this statement: “the best actions a people can take make life better for each other.” which of the arguments above—or another argument you’d like to present—best addresses this statement. explain your answer

Wich organism obtains its energy from dead or decaying matter

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).

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