Oceans 320 Midterm Exam Questions
and Answers
According to the video "Pesticides -DDT-Rachel Carson-Silent Springs" what was Rachel Carson's
main goal in writing her book "Silent Springs" in 1962? - Answer-To question the use of DDT
through research and to let people know that DDT and the chemi...
HOW DO PCBs GET INTO THE ENVIRONMENT? - Answer✔✔-- PCBs spills and leaks from
electrical equipment such as transformers, capacitors or industrial equipment such as hydraulic
lifters
- PCBs in gas dust, transported to water and soil environments by dry deposition and wet
deposition (eg rain, snow) or transported by insects penetrating the soil.
- Due to its large size and little water solubility, PCBs tend to separate from the aqueous phase
and adsorb on the surface of soil, sediment or suspended colloidal particles.
(all of the above)
The Ozone layer seems to be thinning because - Answer✔✔-Human industrial activity has put
gases into the atmosphere that attack O3 molecules.
According to the article "The trajectory of the Anthropocene: The Great Acceleration", When
distinguishing how much a country affects the global climate due to its emissions of greenhouse
gases, it is important to correlate its emissions with what other feature(s) about the country? -
Answer✔✔-- Primary Energy Use
- GDP
Today, nearly 40 years after DDT was banned in the U.S., we continue to live with its long-lasting
effects. Which one is not the long-lasting effects of DDT? - Answer✔✔-DDT can effectively
protect crops.
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