An antigen causes the body to make antibodies.
Answer:
Decomposers
Explanation:
Without decomposition, there is no life really. Although producers give off oxygen and food to consumers, they need organic and inorganic materials, water, air, carbon dioxide, etc. While decomposers, work with what they got
Answer:
Circulatory System
Explanation:
Capilaries are tubes that transport blood and provide nutrition through diffusion in tissues. Transporting blood is a function of the circulatory system.
A. red blood cells. They carry oxygen around the body, not protect from pathogens.
Answer:
A. Mammals the Cenozoic Era gave rise to the mammals to evolve.
