Identify the Challenger Deep and its significance in oceanographic history. What will be an ideal response?
The Challenger Deep is an area of the Mariana Trench (the deepest area in the ocean) in the
Pacific Ocean discovered in 1951 by the British oceanographic research vessel Challenger II.
In 1960, U.S. Navy Lieutenant Don Walsh and Dr. Jacques Piccard became the first to
descend in a submersible vehicle to a depth of 11,022 meters (6.85 miles) into Challenger
Deep. The vehicle they used in the descent was the Trieste, a deep-diving submersible
designed like a blimp.
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If the precautionary principle had been applied to the evidence of the dangerous health effects of smoking tobacco from the 1950s to the 1970s,
A) we would still be waiting for the final word and no government actions would have been taken. B) tobacco companies would have been given much more time to research the health effects before any government regulations were passed. C) cigarette manufacturers would have been required to demonstrate by acceptable scientific procedures that smoking was safe and government regulations would have come much earlier. D) more tobacco products would have been sold.
In the name 2-methyl-2-propenal the numbers represent which of the following?
A) the position of the methyl substituent and the position of the carbonyl group B) the position of the methyl substituent and the position of the alkene double bond C) the position of the carbonyl group and the position of the alkene double bond D) None of the above, since the name does not correspond to a real compound.
There is a great deal of cropland but very little pasture and rangeland in ________
A) North America B) Europe C) Africa D) Australia
Complete the following concept map.
Complete the following concept map for number 3.
A. Biochemical B. Chemical C. Clastic D. Evaporation