What virus first emerged in Asia in 2003?
a) MERS
b) RSV
c) SARS
d) H1N1 flu
Ans: c) SARS
You might also like to view...
A Pasteur flask has a(n)
A) swan neck to prevent particulate matter from getting into the main body of the flask. B) double neck so two substances may be added at the same time. C) secondary opening at the base to allow for drainage. D) inverted upper edge to prevent spillage while swirling.
A typical breath at rest moves about 0.5 liters of air, which is referred to as the ________ volume.
A. tidal B. residual C. exhaled D. resting
In the 1970s, many logging companies employed a method of harvesting trees called clear cutting, in which all trees were cut down and most plant life destroyed in the harvest area. Environmentalists worked with some of these companies to change their process, and by the 1990s a different method called selective harvesting was used. In selective harvesting, only specific trees were cut down, which resulted in significantly less damage to the surrounding area. In changing their process, these companies ensured that the environment produced more usable product over time. Which of the following statements is an economic benefit of this change in process?
A) Logging companies can harvest from the same locations more than once over a ten-year time span. B) The change in process will cause an increase resources needed to harvest a given section of forest. C) The change in process will result in decreased habitat loss in the area, causing only small changes in populations. D) The population will change due to loss of habitat in a harvested area
Reproductive isolation occurs in allopatric speciation via ________ and in sympatric speciation via _________.
Fill in the blank(s) with the appropriate word(s).