Answer:
Explanation:Mucus membrane
Natural antibiotic(s)
Immune system
White blood cells
Leukocytes
Lymphatic system
Antigen
Phagocyte
Lymphocyte
T-cells
B-cells
Antibody/antibodies
Fever
Communicable disease
Infection
Pathogen
Skin ( as a protective barrier)
vaccine/vaccination
Stomach
First line of defense
Second line of defense
Third line of defense
Answer:
A. The atria are contracting and pushing blood into the bottom ventricles of the heart.
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Yes n no it depends if u workout n what u eat on a daily basis