Who developed and reorganized the system of classifying stellar types for stars? Einstein
Cannon
Sears
Kepler

einstien

Explanation:

a scenario where a cell may be needed to perform a form of endocytosis is when transporting large molecules. a scenario where a cell may be needed to perform a form of exocytosis is when releasing the large molecule from the cell.

you should wear a lead protective shield when having teeth x-rays

hope i

-lavira : )