Since all stars begin their lives with the same basic composition, what characteristic most determines how they will differ?
a. location where they are formed
b. luminosity they are formed with
c. the color they are formed with
d. the mass they are formed with

the correct option is D(the mass they are formed with).

Explanation:

The formation of star occurs due to accumulation of gas and dust which collapses due to gravity and starts to form stars. The components of star includes:

- hydrogen( which is converted to helium in the cores of the star),

- carbon,

- nitrogen,

- oxygen and

- iron

All stars begin their lives with the same basic composition, but the characteristic that most determines how they will differ is

the mass they are formed with since most stars have small amounts of heavier elements( carbon, nitrogen, oxygen, iron) than others.

answer: question1

1,000 tons

question2

3: 8

question 3

store d

step-by-step explanation:

the box does not move because you need to use a force greater than 300 n. you are only using 50 n. it needs to at least be 301 n for the box to move because then it is an unbalanced force and it will move the way that the greater force is pushing it. if you use only 300 n it will be a balanced force and will not move because the force you are exerting on the   box is the same as its force.

hope this !

im sorry if i went too in depth, i am going to include a link to a video on khan academy that will explain this.   hope that you like the video and that it explains more in detail to you.

that is the link.