Describe biomagnification and explain why this is a concern for most ecosystems
What will be an ideal response?
Answer: Biomagnification is the process of an organism ingesting chemicals through eating other organisms and having those chemicals accumulate in the animal's tissues. As trophic levels increase, the magnification of the contamination increases. Animals higher up the food chain may contain toxic levels of pesticides and other harmful chemicals. DDT and mercury are among those chemicals that have been banned because of their impact on ecosystems through biomagnification.
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Salt domes are frequently associated with hydrocarbon deposits
a. True b. False
What would you suspect to happen to the load of a stream if its channel shape changes from being narrow and deep to being wide and shallow (assume the area of the channel and average velocity remain constant)?
What will be an ideal response?
When radioactive isotopes decay they emit radiation that is harmful to humans. Which of the following forms of radiation have the highest energy and ability to penetrate solid materials?
A. gamma rays B. ultraviolet waves C. beta particles (electrons) D. microwaves E. alpha particles (helium nuclei)
Do the prevailing winds over the Atlantic appear to be rotating? If so, are
they rotating clockwise or counterclockwise? What will be an ideal response?