Which of the following events could increase earth's temperature?

a decrease in the relative percent of greenhouse gases
planting more trees
widespread removal of tropical forests
a reduction in the use of fossil fuels

Which statement best describes how private industry decides where to spend the money on research and development

Which is an example of gaining a static charge by conduction? a) rubbing a balloon against your hair. b) shuffling your shoes across a carpet. c) bringing a charged rod near an electroscope. d) touching your car on a cold day and getting a shock.

Astone is thrown into a pond. what happens to the amplitude of the resulting waves as they get farther from the point where the stone hit the water? explain.