After our solar system began to form, dust and gas combined into small bodies that formed the planets. what are these small bodies called?

dwarf planets
gas giant planets
planetesimals
terrestrial planets

Which of the following is the most likely result of converting forestland to urban development? a.the amount of land available for lumber production decreases. b.fewer trees are needed because cities are made mainly of concrete. c.people discover more efficient ways to grow trees. d. the price of lumber goes down.

If scientists are wrong about earth's age based on radioactive material and the decay rates are really much faster, how would nuclear power plants be affected?

List charasteristics of athenosphere