What type of severe weather produces dangerous lighting and hail

Explain why components that are naturally found in air can be considered air pollutants.

What was one effect of european influence on southeast asia?

Which evidence is most likely used to indicate the beginning of solar system formation? a. materials combined to form a mass. b. materials were pulled together by gravity. c. water condensed and collected to form oceans. d. different species of microorganisms lived on earth.