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Which of the following best describes the transfer of phosphates and the impact on the environment and human health? (3 points)

Two stars, Star 1 and Star 2, are at almost equal distances from Earth. The table below shows the masses of the two stars. Name of Star Mass of Star (in million solar masses) Star 1 3.61 Star 2 11.73 Which of these statements is most likely correct about the stars? (3 points)

The graph below shows the salmon population, in thousands of pounds, in the Columbia River, from 1866 to 1983. Based on the graph, which of these conclusions is most likely correct? (3 points)

Which of these best matches surface features with the processes that are responsible for their formation? (3 points)

Which of these pollutants is transferred from soil to water by fertilizer runoff from farms and leaky septic tanks? (3 points)

The lake water in a location in Florida had an unusual color and smell. Investigations revealed that the lake water contained high levels of toxic fertilizers and pesticides which were carried into the lake from gardens and common areas in the location. How can people prevent toxic run-off into the local lake? (3 points)

Which of these properties of a star best determines whether it would end up as a white dwarf, neutron star, or black hole? (3 points)

Which of these properties of a star best determines its life cycle? (3 points)

One student conserves 3 cups of water by turning off the tap while brushing teeth for 2 minutes. What is the approximate amount of water 4 students would conserve by this method? (3 points)

The table below shows the salmon population, in thousands of pounds, in Columbia River, from 1870 to 1950. Year Salmon population (in thousands of pounds) 1870 10,200 1890 20,000 1915 20,500 1931 30,000 1950 10,000 Based on the table, which of these is most likely the period during which a series of large hydropower units were built on the Columbia River? (3 points)