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The mode of natural selection in which extreme phenotypes are less fit than the intermediate phenotype is

The fossil record is often incomplete, in partbecause scientists will never be able to discover some of the fossils that are buried deep in the earth.

In Africa and other parts of the world, malaria parasites can cause deadly illness. Individuals who are heterozygous for sickle-cell anemia have some resistance to the malaria infection. This is known as

In a process called __________, nitrogen and phosphorus fertilize algae in the water, resulting in algal blooms.

Raw sewage within a water ecosystem can kill fish because respiration by the microbes in the sewage reduces the concentration of oxygen within the water.

Check the following for style, punctuation, grammar, etc. (True = Correct, False = Incorrect)  The university promised to ease the parking situation, and they plan three new garages. 

True or False: When a country undergoes dollarization, it mostly gives up control over monetary policy.

When Congress passes a large increase in government spending into law, it is conducting ____, and this is more appropriate in the presence of a ____.

Which of the following represents the rate-determining transition state for the formation of the MAJOR product in the reaction shown below? Note: The relative reaction rates of 1° H : 2° H : 3° H are 1 : 4 : 5, respectively. Both chain propagation steps of the reaction are exothermic.

For each pair of reactions shown below, determine which reaction would proceed at a faster rate. A or B: [AorB] C or D: [CorD] E or F: [EorF]