Explanation:
C. Eubacteria and Archaebacteria
The mass of a star can be determined by studying D) binary star systems.
Although there may be other ways to determine the mass of a star, this is the most common one which is widely used all over the world when it comes to measuring objects in the universe.
Answer:
answer is 100 base pairs long
Answer:
A
Explanation:
If one object attracts another object, it causes the second object to move towards it. Anything with strong gravity attracts other things to it.
