(01.03 MC) What is the source of oxygen in the epipelagic zone? (3 points)

(02.06 LC) When glaciers melt, water is returned to groundwater storage by what means? (3 points)

(01.03 LC) If you were descending through the ocean zones in a submersible, which would be the first zone you encounter that is entirely without light? (3 points)

(03.03 MC) You call to a friend from a boat floating in the ocean. Which best describes the changes in the speed of the sound waves as they move from you to below the surface of the ocean? (3 points)

(03.02 LC) Which of the following is an example of a closed system? (3 points)

(01.01 HC) A group of marine scientists introduced a species of fish into an artificial habitat and wanted to determine if it will grow well in the new environment. They recorded the population over several years and their data is plotted below. Analyze the data and formulate a conclusion. Does this species of fish do well in this habitat? Predict what will happen to the population over the next five years. (3 points)

(01.01 HC) Scientists have been studying threats to coral reefs. The percent of reefs affected by various threats are shown in the figure below. A future global temperature increase may affect all categories on the figure. Predict which category would change the most from global temperature increases and propose a testable question that scientists could study. (3 points) © 2016 World Resources Institute

(02.06 MC) Nitrogen is naturally abundant in the atmosphere. Why are nitrogen fertilizers added to soil, despite the dangers they produce when they enter aquatic ecosystems? (3 points)

(01.01 MC) In order to understand the impact of climate change, a scientist collected measurements of average yearly sea surface temperatures from 1880 to 2012. His data is graphed below. How has average ocean temperature changed in the period from 1980 to 2010? (3 points) © 2016 NOAA

(02.01 HC) The North American Plate is moving away from the Eurasian Plate, forming the Mid-Atlantic Ridge. Iceland offers a natural laboratory to scientists studying plate tectonics. Using what you know about plate tectonics, predict what boundary zone is occurring and two resulting features from the choices below. (3 points) © 2016 US Department of the Interior; US Geological Survey