Judge the following sentence according to the criteria given below: Marine invertebrates such as worms, mussels, and octopuses have not had to evolve special mechanisms to maintain their body fluids at a proper concentrations BECAUSE tropical
organisms grow faster, have a shorter life expectancy. 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.
B
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What percentage of the world's photosynthetic activity is accomplished by phytoplankton in the euphotic zone?
A. 70 B. 60 C. 50 D. 40 E. 30
Bra, Greve, Orvieto and Positano in Chianti, Italy are
A) the founding municipalities of the slow cities movement. B) derelict sites as they have fallen into significant disrepair over time. C) Europe's most affluent shopping malls and sites of consumption. D) derelict inner-city neighborhoods of Los Angeles of which people have a vague cognitive image. E) famous sites along Route 67.
Complete the following chart (round off relative humidity to the nearest percent).
Which of the following ecosystem service degradations is not a major environmental concern for sustainable development?
A) overfishing the oceans B) degrading agricultural soils C) depleting supplies of coal D) cutting forests faster than they can regrow