Question

Which happened during the Paleozoic era?


A.
Bony fish evolved.


B.


No life was present yet on earth.


C.
Sponges and invertebrates dominated the seas.


D.


Bacteria were the dominant life-forms.

Answer 1

@ospreytriple

Answer 2

Sorry @Ariel27, this is outside my area of knowledge. Good luck with it.

Answer 3

ok

Answer 4

@dan815

Answer 5

D

Answer 6

no,i think it is b because that time no animals were being developed because all of the destruction then it began after a while(the animals having a life). then they all got wiped out due from the mountains and construction