Negative: the ice is melting meaning sea levels are rising. if sea levels are rising then there is less land. if there is less land then there is less land to be able to farm on
Either the first one or second one
Contour lines do not cross one another because each line represents a different elevation on a topographic map.<span> </span>
Calhoun was vice president of the United States in 1824 under John Quincy Adams and was re-elected in 1828 under Andrew Jackson. Jackson was for the Tariff of 1828 and caused Calhoun to be opposed to Jackson, which led to Calhoun's resignation in 1832.
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During a full or new moon, when the Earth, moon and sun align, spring tides form, creating higher and lower than normal tides. During the first- and third-quarter moon phases, when the moon and sun are at right angles to the Earth, neap tides occur, creating low and high tides with minimal difference in heights.
