I know for sure that the third one is correct
1. is D. Scientific method cannot be replaced.
2. is B.
3. is B as well.
<span>Subrahmanyan Chandrasekhar
</span>
Answer:
Astronomers have divided the eight planets of our solar system into the inner planets and the outer planets. The 4 inner planets are the closest to the Sun, and the outer planets are the other four – Jupiter, Saturn, Uranus, and Neptune. The outer planets are also called the Jovian planets or gas giants.
Explanation: