Which mineral is hard and has the same color and streak

What is a subatomic particle with a negative charge and very little mass?

When using the scientist method, which step comes last?

According to newton’s law of universal gravitation, which statements are true? as we move to higher altitudes, the force of gravity on us decreases. as we move to higher altitudes, the force of gravity on us increases. as we gain mass, the force of gravity on us decreases. as we gain mass, the force of gravity on us increases. as we move faster, the force of gravity on us increases.