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2 18 explain how a new power plant built on the banks

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[2]18.Explain how a new power plant built on the banks of the Rocky River couldhave an environmental impact on the Rocky River ecosystem downstreamfrom the plant. Your explanation must include the effects of the power planton:water temperature [1]dissolved oxygen [1]fish species [1]Base your answers to questions 50 and 51 on the information below and onyour knowledge of biology.Amphibians have long been considered an indicator of the health of life onEarth. Scientists are concerned because amphibian populations have beendeclining worldwide since the 1980s. In fact, in the past decade, twentyspecies of amphibians have become extinct and many others are
116endangered.Scientists have linked this decline in amphibians to global climatic changes.Warmer weather during the last three decades has resulted in thedestruction of many of the eggs produced by the Western toad. Warmerweather has also led to a decrease in rain and snow in the Cascade MountainRange in Oregon, reducing the water level in lakes and ponds that serve asthe reproductive sites for the Western toad. As a result, the eggs are exposedto more ultraviolet light. This makes the eggs more susceptible to watermold that kills the embryos by the hundreds of thousands.29.The term used to identify the worldwide climatic changes referred to inthe passage is(1)global warming(2)deforestation(3)mineral depletion(4)industrialization30.Statetwoways the decline in amphibian populations could disrupt thestability of the ecosystems they inhabit. [2]WorkspaceBase your answers to questions 47 through 49 on the food web and graphbelow and on your knowledge of biology. The graph represents theinteraction of two different populations,AandB,in the food web.44.PopulationAis made up of living animals. The members of populationBfeed on these living animals. The members of populationBare most likely(1)scavengers(2)autotrophs(3)predators(4)parasites45.Identify one heterotroph from the food web that could be a member ofpopulationA. [1]
11746.An energy pyramid is shown below.Identify one organism shown in the food web that would be found at levelX.[1]Base your answers to questions 55 through 57 on the information and graphbelow.Reducing toxic chemicals released into the environment often requires laws.When making decisions about whether or not to support the passing of suchlaws, individuals must weigh the benefits against the potential risks if the lawis not passed.The amounts of toxic chemicals released into the environment of New YorkState over a ten-year period are shown in the graph below.50.State one possiblenegativeeffect of passing a law to reduce the releaseof toxic chemicals. [1]51.State one possible explanation for why the amount of toxic chemicalsreleased remained relatively constant between 1995 and 1997. [1]52.State one other type of environmental problem that has been reduced bypassing laws. [1]Base your answers to questions 40 through 43 on the information below andon your knowledge of biology.

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Term
Spring
Professor
allan thomas

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