Researchers condition a flatworm to contract when exposed to light by repeatedly pairing the light with electric shock. the electric shock is a(n)

Which describe reflection? check all that apply. light bounces off a boundary.

The sun generates both mechanical and electromagnetic waves. which statement about those wave is true?

Which are advantages of renewable resources? check all that apply. renewable energy supplies are completely reliable everywhere. some renewable resources will never be used up. little or no waste is produced by renewable resource plants. electricity can be generated in large quantities. many renewable energy facilities have lower operating costs.