The discovery of the cell was possible do to the invention of the Microscope.
Answer & Explanation:
Here's the order of the planets, starting nearest the sun and working outward through the solar system: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune — and Planet Nine.
Its basically saying something (object) at rest is going to stay there until something moves it like an outside object.
A specific animal is A. species