What is the primary human cause of global warming?
a. the storage of nuclear fuel rods
b. the burning of fossil fuels
c. the building of high-density housing
d. violent conflicts over natural resources

The best and most correct answer among the choices provided by your question is the second choice or letter B.

The primary cause of global warming is the burning of fossil fuels.

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Jet streams are relatively narrow bands of strong wind in the upper levels of the atmosphere. the winds blow from west to east in jet streams but the flow often shifts to the north and south. jet streams follow the boundaries between hot and cold air. the earth's rotation is responsible for the jet stream as well.