Muscles are the tissue structures that move bones. They are connected to bones and need proteins to grow and stay healthy.
Answer:
1 = A
2 = B
3 = B
Explanation:
1) Black holes occur when really big stars collapse on themselves. And, in order to get big, the star has to be an old one.
2) A black hole is something huge that swallows up everything, while a protostar is just the very beginning of a star.
3) Scientist can't truly know for sure, but they can infer about them due to the effects of the surrounding areas.
Answer:
get a cheat sheet like fr
Explanation:
Studying cells helps us to construct better medicines and vaccines, which is beneficial to understanding life.
