The answer to your question is answer choice .1 Independent variable.
An organic compound<span> is any member of a large class of gaseous, liquid, or solid chemical </span>compounds<span> whose molecules contain carbon. From this, you could be able to find the answer.</span>
Yes, the pterosaurs is the ancestor of the bird.
The answer would be 9. There are nine <span>essential amino acids needed to create a complete protein. </span>
