Explanation:
It's little bit short but it will help you and you can get full mark hope it will help you! Have a nice day. ^_^
It is only because of their life spand... its pretty short.
Cells, tissue, organs, organ systems, and organisms.
Answer:
A. Galaxies
Explanation:
Galaxy cluster is known to contains 50 to 1000 galaxies, having a total mass between 100 trillion and 1 quadrillion solar masses, crossing across a distance of 30 million light years.
The word galaxy is derived from the Greek galaxias which means milky, a reference to the Milky Way. Galaxies range in size from the smallest of it with just a few hundred million stars to giants with one hundred trillion stars, with each rotating/orbiting its galaxy's center of mass.
