A heavy ball hangs by a string, with a second string attached to its bottom (Figure 2.7 in your textbook). A quick pull on the bottom string breaks the
A. bottom string.
B. top or bottom string equally likely.
C. top string.
D. none of the above
Answer: A
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On a large urban or industrial scale, biogas can be produced
A) by using crushed fresh corn in an aerobic tank. B) from municipal wastewater treatment, landfills and food waste. C) using enzymes to degrade cellulose to glucose and then fermenting. D) drilling into areas adjacent to petroleum deposits.
Located adjacent to red on the electromagnetic spectrum, and having a longer wavelength, is ________ radiation, which we cannot see but which we can detect as heat
Fill in the blank(s) with correct word
Judge the following sentence according to the criteria given below: The euphotic zone is deeper near the coast than in the open ocean BECAUSE coastal waters contain more suspended inorganic material that limit light penetration
A) The assertion and the reason are both correct, and the reason is valid. B) The assertion and the reason are both correct, but the reason is invalid. C) The assertion is correct, but the reason is incorrect. D) The assertion is incorrect, but the reason is correct. E) Both the assertion and the reason are incorrect.
Which of the following terms describes organisms that live on the bottom yet also have the ability to swim or crawl through the water above the ocean floor?
A) Benthonektos B) Epifauna C) Infauna D) Nektobenthos E) Planktofauna