This might be wrong but I think it’s B
Answer:
Option C.
our solar system, the Milky Way Galaxy, the universe
Explanation:
The Solar system comprises of the star and all its planets, comets, asteroids and also other bodies. It is very larger than a star.
The milky way galaxy comprises of group of solar systems that orbit around a central core . The galaxy normally have very big hole in their centre.
The Universe contain billions of galaxies and it comprises of everything, asteriod, moon, planet, star, solar system,galaxy.....
Answer:
a. When a fetus is 13-15 weeks old
Explanation: is correct
I'm pretty sure the answer is B
It kills of the virus while strengthening the immune system
