Por que la fotosintesis es un proceso beneficioso para los seres vivos?

Why is it important to reduce the number of chromosomes in half when forming gametes for sexual reproduction?

Vaccines are weakened forms of disease causing microorganisms, which are given to patients to prevent disease. after the vaccine is administered, the immune system responds by creating a(n) to recognize the a.) antibody, antibiotic b.) antigen, antibody c.)antibiotic, antibody d.)antibody, antigen

What substance is the most acidic. lemon juice. tomato juice. sodium hydroxide. water