(06.04 MC) An ecologist suspects that an otherwise healthy…

(06.04 MC) An ecologist suspects that an otherwise healthy estuary ecosystem experienced an unusually high level of acid deposition during a rainy spring. Which of the following should the ecologist measure to help confirm her hypothesis? Changes to the population of indicator organisms The aluminum concentration in the water The temperature of the water

(07.01 MC) Demitri has worked in the family deli since he w…

(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.

(07.01 MC) The diagram below represents a marine food web a…

(07.01 MC) The diagram below represents a marine food web and a process that can harm the human population. Each circle represents an organism, and the smaller dots inside them represent a toxic substance. © 2016 CC-BY-SA What is being represented, and how does it harm the population?