How do scientists know that dark matter exists? A) It’s heat raises the temperature of space.

B) Its gravity affects objects around it.

C) It gives off electromagnetic waves.

D) All of these.

The meseta in spain is a a. navigable river b. castle c. coastal plain d. plateau

Which of the following is not a consequence of urban sprawl? increased racial tensions the relocation of industry to the inner cities higher poverty rates in the inner cities higher unemployment rates in the inner cities population losses to inner cities

Which statements explain how ponds and lakes differ? check all that ponds are shallower than lakes. ponds are larger than lakes. pond water moves more than lake water. lakes have more plants at the bottom than ponds. lakes are colder and darker at the bottom than ponds.