Compare the emergence of advanced civilizations in Meso and South America with the four early river valley civilizations. Which of the following fulfilled the same role in the Mayan civilization that clay seals filled in Harappa? (1 point)

codices
limestone
leaves
cave walls

What is the missing step in solving the inequality 5 - 8x < 2x + 3?

Which statements about wells are true? check all that apply. a) wells bring groundwater from the unsaturated zone to the surface of the water. b) wells need to be drilled below the water table. c) if water is pumped from a well too quicky, the well may run dry. d) water from wells is generally not safe to drink. e) water gushes from artesian wells due to pressure.

What id the primary human cause of the global warming a. storage of nuclear fuel rods b. burning of fossil fuels c. building of high-density housing d. violent conflicts over natural resources