I think it’s Ribosomes but I could be wrong .. if so sorry
Answer: past
Explanation: answers show that combonations can develope things
Answer:
The respiratory centers that control your rate of breathing are in the brainstem or medulla. The nerve cells that live within these centers automatically send signals to the diaphragm and intercostal muscles to contract and relax at regular intervals.
Since an animal only becomes more complex, and not simpler, an ancestor to all organisms would have to be the most simple and primitive organism.
autotroph would mean to self feed or you are are capable of feeding yourself
