(04.03 MC) The table below shows the number of sharks caught at two stations in the Gulf of Mexico and the dissolved oxygen in the water at each station. What is the most likely reason for the low number of sharks caught at Station 138? (3 points)   Dissolved oxygen Oxygen-level classification Number of sharks caught Station 137 1.5 mg/liter Hypoxic 53 Station 138 0.02 mg/liter Anoxic 5 Source: NOAA

(06.01 LC) What are some effects of the tiny beads called microplastics that are a large component of ocean garbage patches? (3 points)

(06.03 HC) The illustration shows one of the ways resources are removed from the deep sea. Describe what type of resources these are, including if they are renewable or non-renewable. Predict two consequences to the seafloor life if this process is not regulated. (5 points) © 2016 Indywatch.org

(06.03 MC) Study the photo of a proposed ship and deep-sea mineral mining apparatus. What would be the most likely environmental impact that the company faces regarding the seafloor? (3 points) © 2016 Keith Jackson & Friends

(06.01 HC) The graph shows the amount of global warming happening in different ecosystems. Which populations of organisms will likely decline the most as a result of climate change, and why? (3 points) © 2016 GlobalIssues.org

(06.03 LC) Why is methane so expensive to harvest as a nonrenewable energy source? (3 points)

(04.06 MC) The illustration shows the worldwide distribution of killer whales, or orcas. The dark areas indicate regions where the whales are most commonly found. What can be concluded about the distribution of orcas found around the globe? (3 points) © 2015, KillerWhale.org

(04.04 MC) How can carrying capacity in the ocean be best described? (3 points)

(04.01 MC) A species of marine snails have either solid or striped shells. Scientists found that 57 percent of the snail population was striped, and 33 percent was solid. Sea birds are the main predator and when scientists studied their diet, they found that the birds ate more striped snails than solid snails. What could scientists conclude about the snails? (3 points)

(04.03 MC) The following illustration shows a food web for a kelp forest off of the coast of California. What do you predict would happen to the kelp population if the sea otter population declined? (3 points) © 2016 CC-BY-SA