Answer:
A if not A then its D
Explanation:
Mrk me branliest PLZZZZZZZZZ
Secondary since plants/animals already lived there, but got killed/driven out of the area they lived/thrived in/on.
Only one parent, and the same chromosome
<span>number as the parent.</span>
I had this question when I took a biology class cuz I chose to study a lot on paleontology :)
It’s that there’s fossils of animals in geological strata that are older than the Cambrian explosion.
Some fossils from the ediacaran period have been discovered in layers aged to the Cambrian