Match the following. match the items in the left column to the items in the right column. 1. eccentricity earth's tilt 2. milankovitch cycles water that moves because of its temperature and salt content 3. obliquity movement of earth's imaginary, rotating, polar axis 4. precession predictable variations of earth's orbit and tilt that can affect climate 5. thermohaline circulation the shape of earth's orbit about the sun; can change from a more elliptical to a more circular path and back 6. upwelling when wind allows cold dense water to rise from the bottom of the ocean to the surface

demand is the need and oportunity to buy a given good or service.

native americans suffered high rates of poverty and unemployment.

during the late 1960s and early 1970sthe need for political militancy grew among the native americans. throughout the 1960s, they had been the nation's poorest minority group, the most deprived group, according to practically every socioeconomic measure. in 1970, the indian unemployment rate was 10 times the national average, and 40 percent of the native american people were below the poverty line.

four sitting presidents have been assassinated while in office but the first was abraham lincoln,

the gutenberg bible was and about 180 copies were sold/made