Which factors add to the greenhouse effect and are caused by human activities? check all that apply. a decrease in the amount of dust in the atmosphere a decrease in the amount of water on earth’s surface an increase in gases in the atmosphere that absorb heat an increase in surfaces that radiate energy into the atmosphere an increase in the amount of solar radiation that reflects into space

Which fact represents evidence for the big bang theory?

If we compare and contrast electromagnetic waves with sound waves, all but one statement is true. that is a) sound waves require a medium to travel while electromagnetic waves do not. b) electromagnetic waves can travel through the vacuum of space while sound waves cannot. c) electromagnetic waves must have a medium in which to travel, but sound waves can travel anywhere. eliminate d) sound waves must bounce off of matter in order to travel while electromagnetic waves do not require matter to be present.

Which phrase best defines a mountain eee