What name is given to the molecules that bind to foreign proteins that enter the body?
a. antigens
b. antibodies
c. allergens
d. antibiotics

Adigestive system that is a series of tubes beginning at the mouth and ending at the anus is a digestive system.

Which statement describes an endocrine function rather than an exocrine function? a. salivary glands release saliva into the mouth. b. sweat glands release sweat onto the skin c. the pineal gland releases melatonin into the blood. d. esophageal glands release mucus into the esophagus.

Drag each tile to the correct location. match each trait that an organism displays to a reproductive strategy.