One of the weaknesses of California's massive agricultural economy is what?
A) Its reliance on underpaid migrant labor from Latin America.
B) The amount of farms starting to become unusable for agriculture because of the overuse of pesticides.
C) Too much farmland has been used for industrial farming and cannot be used for organic farms.
D) The extinction of native species, due to loss of habitat, has resulted in certain plant eating insects and animals no longer having natural predators.
A
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Which of the following statements describes the polar front jet stream?
A. It is normally found at a higher elevation than the subtropical jet. B. It is strongest in summer. C. It forms near 30° latitude. D. It moves farther south in winter.
_____ is a sedimentary rock formed mechanically from fine silt and clay particles.
a - granite b - sandstone c - basalt d - limestone e - shale
Most North Atlantic hurricanes eventually swing northward if the Bermuda high is weak
Indicate whether the statement is true or false
Oceanic-type crust is denser than continental-type crust
a. true b. false