Answer:
the answer is 21 :)
<em>hope this helps</em> ^^
Answer:
C. They are made from many carbon atoms
Explanation:
The answer is tunicates. Tunicates are commonly known as sea squirts and are in the Chordata phylum, even though they don't have a back bone. Which is really weird. But they just got put into the same category as humans. This is because they have a notocord and a back bone when they are larvae. But they lose all these when they become adults.
