Answer:
1) The origin of life. 2) The mechanisms of evolution. 3) The control of the size, both of the organs and of the living beings.
Step-by-step explanation:
Some examples,
Are gender traits completely a result of societal expectations?
Are there any parts of the human body that get oxygen directly from the air and not from the blood?
Are there nuclear reactions going on in our bodies?
Can humans ever directly see a photon?