Which of the following is true regarding phase changes?
A) Energy is released when going from higher to lower energy state.
B) Energy is required to go from a higher to lower energy state.
C) All phase changes involve the release of energy.
D) All phase changes require energy absorption.
A) Energy is released when going from higher to lower energy state.
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Why do surface winds cross the isobars at an angle toward lower pressure (instead of blowing parallel to the isobars)?
A) Pressure gradient becomes stronger near the surface. B) It results from divergence in the surface wind. C) Coriolis strengthens by combining with friction. D) Convergence of upper level winds causes this. E) Friction reduces the speed so Coriolis is weakened.
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.
Why have fisheries in the region declined since the 1950s?
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