Which type of selection leads to increased phenotypic and genetic variation? directional selection disruptive selection stabilizing selection species selection

Is there any species that went extinct in recent years due to natural causes (not caused by human interaction). if so, what caused it?

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

In what cells is the human genome located?