Which of the following reasons explains why electrical cords are plastic coatings with metal wires on the inside? a. both plastic and metal have high electrical conductivity. b. both plastic and metal have low electrical conductivity. c. plastic has high electrical conductivity, and metal has low electrical conductivity. d. plastic has low electrical conductivity, and metal has high electrical conductivity

Select the correct answer. which of the following statements is a scientific claim? a. the early solar system had large amounts of water; so, the oldest objects in the solar system should also be abundant in water. b. the mass of the universe is much greater than current models predict; it is not possible to explain this inconsistency. c. planet earth is abundant in water, but there is no way to scientifically determine from where earth's water originated. d. earth is shaped like a sphere even if not all of the scientific observations related to its shape support this idea.