The outer core of the earth is primarily made of a solid metal. b molten metal. c primarily water. d unknown materials

Rotenone is an insecticide that is toxic

Set comes up with for examples of sound waves ocean wave light wave and hand wave which of tonys examples is not an actual scientific wave

Which of the following types of pollution is most responsible for large numbers of deaths worldwide because of unsafe drinking water? (a) nutrient pollution (b) thermal pollution (c) pathogen pollution (d) sediment pollution