A water molecule consists of one oxygen atom bonded to two hydrogen atoms by covalent bonds
Stomata that is the answer
I think A- laboratory mice are similar but not identical
It's like editing over what's already written. it's the process of reading something and marking for any error. (: Usually deemed more helpful when you let two completely different people proof read the same paper to get a better result!
Good luck, rockstar! (: I wish you the best and hope you pass!