<p>FINAL EXAM REVIEW: 52 questions from first semester tests!!!!!</p><p>Is it possible to make new water?</p><p>Is the water that fills your toilet and sink from the same place? If your pipes are old/gross, why can you still drink from them? </p><p>Do you pay the actual cost of water? </p><p>Describe why controlling invasive species is difficult: </p><p>Are successful invasive species generalists or specialists? What are the types of fish reproduction? </p><p>Describe what happens when fish spawn:</p><p>Define “macroinvertebrate”: </p><p>What are the two groups of macroinvertebrates? </p><p>What type of cells do protists have? </p><p>Differentiate between anadromous and catadromous:</p><p>Have humans actually ever seen eels in the act of spawning? What are mollusks? </p><p>How do clams eat?</p><p>In clams, which muscle is bigger? </p><p>Crayfish live in which type of water? </p><p>What percent of the Earth’s water supply is fresh? </p><p>What powers the hydrologic (water) cycle? </p><p>Define erosion: Define watershed: </p><p>What percentage of the earth is covered in water? </p><p>What makes up most of the Edwards Aquifer? </p><p>Most of the Earths freshwater is in: </p><p>Who sets the standard for drinking water in the US? Why are cedar trees bad? </p><p>What is the only natural lake in TX? </p><p>Describe the following levels of organization: Species, Population, Community, Ecosystem, Biome, Biosphere</p><p>What is the difference between producers and consumers? How are consumers identified on a food chain, web, or pyramid? (How do we know their place?)</p><p>How much energy is transferred to the next trophic level? What happens to the other percentage? Natural disturbances can cause what ecological phenomenon? Differentiate between mutualism, commensalism, and parasitism:</p><p>How can you tell the age of a fish? </p><p>What are the two main sources of fresh water?</p><p>What part of a river is the beginning?</p><p>What is the world’s only freshwater seal?</p><p>What is the purpose of fish travelling long distances to spawn? Differentiate between vertebrates and invertebrates:</p><p>Why are macroinvertebrates important to ecologists?</p><p>How do protists move?</p><p>List some examples of mollusks:</p><p>What makes the shell/pearls in a mollusk?</p><p>List the classes of mollusks:</p><p>How do clams move?</p><p>List some examples of crustaceans:</p><p>How can you tell a male from a female crayfish?</p><p>Define estuary:</p>