Can someone help me with these two please

What is the best-known carbohydrate?

Environmental science are unconsidered with methods to preserve natural resourcesa.trueb.false

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