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(07.01 MC) A research team studying a lake ecosystem found that many male fish were developing female reproductive organs, and some fish were born with deformities such as irregular fins. Which of the following would explain the observed effects on the fish population? An increase in the number of predators in the lake. An increase in the levels of noise pollution in the lake. An increase in the amount of herbicides present in the lake.

(05.05 MC) Which of the following describes an environmental disadvantage of using a hydroelectric dam?

(05.04 LC) Which process separates hydrogen from carbon in methane?

(07.03 MC) Disposing of waste in the ocean is a practice for some countries. How does dumping waste into the ocean affect the environment? Wildlife can become entangled in it Organisms ingest the trash Water becomes contaminated

(08.02 LC) Which of the following greenhouse gases has the lowest global warming potential (GWP)?

(08.05 MC) Which of the following actions would be most effective in decreasing the amount of carbon dioxide in the atmosphere while increasing the amount of biodiversity in an area?

(08.01 LC) The Montreal Protocol has benefited the environment tremendously by

An adult female has received 20 sessions of voice therapy for hoarseness related to vocal nodules. Data for pre- and post-evaluation measures are: Pre-treatment scores Post-treatment scores Fundamental Frequency (Hz)           150 200 Phonation duration (seconds)           10 secs 15 secs Jitter (percent) 1.2 0.68 Which of the following is most strongly indicated by the data?

(07.01 MC) Why is it recommended that humans eat smaller fish such as anchovies or sardines instead of large predatory fish?

(08.03, 08.04, 08.05 HC) Since the early 20th century, glaciers around the world have been retreating at unprecedented rates. Scientists have studied 37 glaciers since 1980 to collect data on their average mass in the graph below: © Climate.gov—NOAA   Refer to the graph in figure 1 to answer the following questions. Describe the trend of glacier ice loss and gain between 1990 and 2014. Describe a positive feedback mechanism affecting the rate of glacier retreat. Explain two effects of melting glaciers and sea ice have on land and sea environments. In northeast Greenland, a glacier named Zachariae Isstrom entered a phase of accelerated retreat in 2012. Over the last few years, the glacier has broken up and is now fracturing, with large icebergs being released into the ocean. Describe two threats affecting the biodiversity of polar and glacier ecosystems. Propose a solution to reduce the impact of melting glaciers on Earth’s biodiversity. Justify how this solution would protect marine or land species from extinction.