Aforest has pine trees, along with oak trees and birch trees. all the trees provide shelter and food for different animals in the habitat. do these trees occupy the same niche? explain.

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