In the Norwegian cyclone model, dry ____________________ ____________________ air is initially separated from moist marine tropical air
Fill in the blank(s) with correct word
continental polar
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Variation is always present in populations because ____
a. alleles control multiple genes b. genes blend during inheritance c. alleles blend during inheritance d. genes are reshuffled by reproduction and altered by mutations e. new traits develop when traits that are not expressed are lost
This graph indicates which of the following about the global trend in fishing?
A) Despite increased effort, the total fish harvest has barely increased in the last 20 years. B) More and more fish are being harvested every year. C) Fish are declining as a source of food. D) The developing world catches more fish than the developed world.
Scientists think that melting Arctic Sea ice may have the following consequences except
A) A weakening of the jet stream. B) Warmer conditions in the United States and Europe. C) High pressure conditions over Greenland. D) Larger meanders in the jet stream.
Oxisols are not very fertile
Indicate whether the statement is true or false