1) Who teaches a baby to crawl?
He is trying to walk but this is the best copy he is capable of.
2) Who teaches a baby to reach up, pull itself up, and try to stand?
Practice, a lot of it.
3) Who teaches a baby to stand?
Watching others. Babies that recieve less attention take longer. Blind babies take a lot longer.
4) Who teaches a baby to walk? Yes, we hold their hands for support, but only after they display the ability to stand and then to attempt to walk.
ditto
5) Who teaches a baby to reach up and try to touch the toy hanging on the crib?
Babies have a growth stage where they prefer to grab, but the grabbing itself is learned.
6) Who teaches a baby to naturally suck on its' mothers breast or a bottle?
This one is likely the real thing.
7) Who teaches a baby to once it can crawl and walk around to investigate its' surroundings?
Is curiosity a skill?
8) Who teaches a baby to utter sounds, or to coo, to laugh, to cry?
It has ears, just like it has eyes.
9) etc.
ect ditto