Environmental pollutants such as PCB's and the pesticide DDT are fat-soluble, non-biodegradable, and contaminate oceans and other aquatic systems
Plankton in the ocean become contaminated by these chemicals and pass them along through the food chain. A pregnant woman has been cautioned to limit her consumption of food that may be high in PCBs. If she consumes food from a nearby contaminated ocean, we would expect that the most contaminated foods would be A) shrimp.
B) clams.
C) fish that eat shrimp.
D) kelp and other ocean plants.
C
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When waves approach the shore, a series of changes takes place. One change is that the ____
A) wave crest becomes peaked B) wavelength increases C) wave height decreases D) wave velocity increases
What are some of the dangers corals have to face right now? What impact will global warming have on these factors?
Polar high pressure occurs in which of the following regions?
A) Equatorial (0 to 5 degrees) B) 5- to 30 degrees C) 30 degrees D) 30 to 60 degrees E) 60 degrees F) 60 to 90 degrees G) Poles (90 degrees)
The best way to sustainably manage natural environments is to
A) preserve and maintain the interactions between the members of the ecosystem. B) stop hunting animals and harvesting the fruits of the plants in the ecosystem. C) minimize the impact of natural disasters, such as fires and storms. D) carefully limit the growth of the major carnivores and herbivores in the ecosystem.