Environments are made up of living (biotic) and nonliving (abiotic) factors, True
False
(Answers to 4 and 5)

What happens whenever a net force acts on an object

The terrestrial planets are characterized by having a a.) silicate core b.) iron-rich silicate core c.) iron-rich metallic core d.) none of these

How can antibodies "remember" a particular bacterial invader or "antigen" on that invader?