Groups of organisms that may have been separated for millions of years may be brought together in new combinations primarily by
A) shifting weather patterns.
B) changes in ocean currents.
C) plate tectonics.
D) changes in Earth's magnetic fields.
C
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The average salinity of the oceans is about 3.5% (or 35 parts-per-thousand)
Indicate whether the statement is true or false
The ________ is produced by refraction caused by ice crystals
A) glory B) corona C) halo D) rainbow
The breakdown of the feudalist barriers to production that contributed to the capitalist formation of the city included all of the following EXCEPT
A) accumulation of capital. B) growth of social classes. C) scientific and technological breakthroughs. D) new trade networks. E) stable population growth.
The conversion of 1,3-bisphosphoglycerate to 3-phosphoglycerate produces which of the following?
A) AMP B) ADP C) ATP D) none of these