Answer:
different acids include acetic acid,lactic acid,tartaric acids DNA(deoxyribonucliec acid) .
different bases include calcium oxide Potassium hydroxide ,Sodium hydroxide and Barium hydroxide .
Boron has 3 valence electrons
Explanation:
I don't think human beings will ever extinct
cause they are smart and adaptive
[ar]5s1401
nanbsbshdhshhshshshhd
