The bottom of the euphotic zone is where
1.there’s no more light at all, unmeasurable.
2.there’s insufficient light for any photosynthesis to occur.
3.use of carbohydrates in respiration equals their photosynthetic production.
4.phytoplankton respiration is zero.
3
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Which of the following statements applies to an easterly wave?
A. It moves from west to east. B. It has converging winds on its eastern side. C. It indicates a region of higher than average pressure. D. It may have showers and thunderstorms on its western side.
Why might a high-formula-mass alcohol be insoluble in water?
A. In order for two substance to be soluble in each other, their molecules need to be of comparable mass. B. The bulk of a high-formula-mass alcohol likely consists of nonpolar hydrocarbons. C. A high-formula-mass alcohol would be too attracted to itself to be soluble in water. D. Such an alcohol would likely be in a solid phase.
You were in a discussion with a classmate who complained that immigrants were taking away jobs and abusing social services. In response, another classmate who is a proponent of the open door policy explained that immigrants can actually be a bonus to a country. Someone supporting an open door policy would NOT use which of the following statements?
A. Immigrants usually perform work at a pay scale that citizens are unwilling to accept B. Immigrants are usually of a different racial or ethnic background and add cultural diversity C. Immigrants usually perform dangerous work that citizens are unwilling to do D. Immigrants are usually welcomed by other immigrants or descendants of immigrants E. All of these would probably be used by someone supporting an open door policy
In a large city experiencing urban blight, we would be surprised to find
A) a declining tax base. B) depreciating real estate. C) improving schools. D) increasing crime.