All food chains begin with a . producer consumer decomposer parasite

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

Drag the tiles to the correct boxes to complete the pairs. match each cell organelle with its description.

Which of your fossils are most likely heterotrophs? which of them are autotrophs? how do you know?