Which of the following is the best way to determine if a substance is an element? (melting point, boiling point, what it is made of, density)

Which statement best describes resistance? resistance is a. how well a current will flow in a material and is measured in volts. b. how well a material conducts an electrical charge and is measured in ohms. c. the ability of a material to attract a positive charge to create a current. d. the ability of a material to repel neutral charges and is measured in ohms.

Describe different biomes. what are some adaptations that organisms (plants or animals) must have to live in each biome?

Using the work energy theorem. what is the velocity of a 850kg car after starting at rest when 13,000j of work is done to it.