Are sponges jointed not jointed or nothing
Sponge are are nothing
here are the structures i hope it helps
Answer:
primary, secondary, tertiary, and quaternary.
These would be the elements in row 2 the alkaline metals. Elements in a row usually share many qualities such as electon reactivity as well as similar characteristics like the fact that many alkaline metals are considered Cations, ions with positive charges. Some examples are beryllium and calcium.
Taxonomy is the classification of things; organisms.
Hope this helps.