Differenciate between continental crust and oceanic crust

Advances in technology have enabled scientists and researchers to better study the evolutionary relationships between species

9. the history of life on earth is recorded in

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