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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)

Which of these is the most practical method to prevent global water shortage? (3 points)

Stormwater runoffs carry oil leaked by vehicles on a highway into a pond. This is an example of (3 points)

Some farmers in a location use water from a nearby lake to irrigate crops. The people in the location believe that this may cause environmental problems because of the drying up of the lake. Which of these is the best method to solve this problem? (3 points)

The picture below shows the weather station model at a particular location. Which of these statements best describes the future weather condition at the location? (3 points)