The southern economy that Anne Moody was born into in the 40's was one that was governed and ruled by a bunch of whites, many of which who very prejudice....
This essay has presented Earth’s many changing faces during its journey. Earth had molten beginnings, was , and may have . Later, and and . Earth experienced swings from to conditions as atmospheric gases dramatically changed, continents moved, and vast and of complex life played out on land and sea. But the changes happened over timescales of millions and billions of years, not hundreds. No climate scientist will deny that carbon dioxide traps infrared radiation and warms Earth’s atmosphere. The vented enough carbon dioxide into the atmosphere to create 200 million years of Greenhouse Earth conditions, when reptiles ruled Earth. Volcanism waned and around 150-to-100 mya. By 35 mya, and the Antarctic ice sheet began forming. Every paleoclimate study I have seen places greenhouse gas (and primarily carbon dioxide) concentrations as the primary determinant of global surface temperatures, after the Sun's radiation, but the Sun's output is considered to have been exceptionally stable and has risen slowly over the eons. , usually by accentuating the carbon dioxide with a positive feedback effect that may have reached runaway conditions at times.
Coming of Age in Mississippi - Wikipedia
But the most impressive dual-use innovation in mollusks is what cephalopods invented. Their gill pumps are quite muscular and . That . Jet propulsion is not an energy-efficient means of transportation, but the cephalopod’s ability to pass oxygen-bearing water over its gills is unmatched. Cephalopods can live in waters too hypoxic for fish to survive. In the coming Ordovician Period, cephalopods would be apex predators of marine biomes and would hold that distinction for a long time. Cephalopods are today’s ; the and it has the largest brain-to-body-size ratio of all invertebrates. It is thought that the skills needed for predation stimulated cephalopodan intelligence. Today, the is the only survivor of that lineage of Ordovician apex predators.