Question

fill in the blank


one of the differences between Cambrian animals and pre-Cambrian animals was the appearance of_________, such as antennae, as Cambrian animals evolved.

Answer 1

well i am not really sure but it could be more complex eukaryotic cells but i am really not sure this is a hard question

Answer 2

tell me about it it took me over two days just to try and figure this question

Answer 3

do you think that mor complex eukayotic cells is the answer ?

Answer 4

a little but like i said this question is hard to figure out

Answer 5

yeah it is

Answer 6

thats the answer

Answer 7

thank you so much

Answer 8

you wlcome

Answer 9

It's the jawbone/Skull structure.