In what types of environments would you find protists

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

Which macromolecule catalyzes chemical reactions this be considered enzyme chemical reactions thus he considering enzymes

What was darwins theory of common decent