A mercury barometer is compact and easy to carry around
Indicate whether the statement is true or false
F
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Hydrothermal vents ________
A) make the photic zone of ocean pelagic areas the most productive B) create ocean currents C) provide chemicals to symbiotic bacteria that support ecosystems at the ocean floor D) occur in tropical areas at the ocean surface E) are passageways for fish within coral reefs
Feeding America programs in the United States represent
A) a personal level safety net. B) a family level safety net. C) a national level safety net. D) a global level safety net.
As air descends in a circulation cell, the air ________, and a ________-pressure region occurs where the air reaches Earth's surface
A) warms; high B) cools; high C) cools; low D) warms; low
Which of the following statements about water is true?
A) At temperatures above 4°C, warmer water will rise. B) At temperatures above 4°C, warmer water will sink. C) At temperatures between 0°C and 4°C, warmer water will rise. D) At temperatures below 0°C, warmer water will sink.