Genetic variation. We all have different gene expressions and often times we have different parent cells than somebody else of the same species, though, it's possible to share similar characteristics.
<span>The red algae contain an accessory pigment called "Phycobilin"
Hope this helps!</span>
The atmosphere is a mixture because it contain many types of gases , liquids and solids.
It’s called a branch point, represents where a single lineage evolved into a distinct new one.
