Which two statements about plastics are true? they are made from oil and natural gas. they are natural materials. they are good conductors of heat and electricity. they repel water.

Aspectroscope breaks light up into its colors, allowing scientists to analyze light from the solar system and universe. by studying the spectral line patterns, widths, strengths and positions, scientists can determine the speed, position, and of celestial bodies. a) age b) origin c) rotation d) temperature