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(06.01 MC) Before selling a house, a contractor seals cracks in the foundation. He also installs a system to pressurize the house to blow air from upstairs to the basement. The contractor is most likely hoping to

(07.02 MC) Between 1932 and 1968, a chemical factory in Japan released mercury-laden wastewater into Minamata Bay. The mercury was modified to methylmercury by bacteria living in bottom sediments. This resulted in severe mercury poisoning in over 2,000 people. Since people don’t eat bottom sediments, what is the best explanation for how toxic levels of mercury ended up in affected people?

(06.05 MC) Deena rides the bus for long periods of time to get to work in very loud urban city. She also attends every music concert that comes to town or nearby. During the last conversation with her brother Donovan, she had trouble hearing him unless he raised his voice a bit. Which of the following could have contributed to her trouble with hearing his normal speaking voice?   Frequenting many music concerts Yelling at Donovan when he would aggravate her Using public transportation every day to go to work  

(07.02 MC) After a large chemical spill occurred after an earthquake causing cadmium to be released into an aquatic environment and waters used for drinking. Which of the following describes an impact this could have on a population?

(06.01 LC) Within a park in a large city that often has thick smog from cars, ecologists investigating long-term changes  discover that plants have become brittle and diseased. Their leaves are damaged, and they show signs of limited growth. Which air pollutant would the ecologists most likely suspect is responsible?

(08.05 MC) How would spraying a yard with chemical pesticides to control insects be most likely to affect the diversity of insects found in it?

(07.01 MC) Demitri has worked in the family deli since he was 15. He has been handed the family business now that he is 25. His hands tremble severely when he makes sandwiches for patrons. What would explain the trembling in Demitri’s hands? Demitri is worried that his family will not like the way he is running the business. Demitri has been exposed to numerous toxic chemicals over the years from cleaning equipment at the deli. Demitri used to play maracas in band in high school and pretends he is still in the band.

(08.05 MC) Zebra mussels were first discovered in North America in the Great Lakes in 1988. This invasive species eats phytoplankton and other microscopic organisms in fresh water. What would be the most likely effect if zebra mussels are introduced into a local freshwater lake?

(07.06 LC) Both skin cancer and respiratory issues can be linked to

(05.05 MC) Which of the following describes an environmental advantage of using a hydroelectric dam instead of tidal fences to generate energy?