Answer:
a camera employs camera lens to firm some images.
Explanation:
hope this helps.
Reactivity is the ability to react with other substances/(the answer is reactivity)
Answer:
he can use the laser to point to specific information on the slides.
he can use the laser to point to specific information on the slides.Explanation:
Answer:
D. The net electrical charge of the Earth.
Explanation:
All the other three choices affect the gravitational force. I remember from middle school.