An emergency situation at robbers cave brought the groups together because of a. in-group solidarity b. intergroup conflict c. all of these d. superordinate goals

Which factors add to the greenhouse effect and are caused by human activities?

If we represent the solar system on a scale that allows us to walk from the sun to pluto in a few minutes, then a) the planets are microscopic and the stars are millions of miles away. b) the planets are the size of basketballs and the nearest stars are a few miles away. c) the planets are marble size or smaller and the nearest stars are thousands of miles away.

Scientists think that convection currents flow in earth’s a. continents. b. mantle. c. lithosphere. d. inner core.