A student conducts an experiment with a dog and a statue of a dog. The student provides a slice of bread to both the subjects every two hours. Only the dog eats the bread. Which characteristic of life is best demonstrated by this experiment?

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.

Use the phylogenetic tree to the right to determine which statement below is true. organisms a and f are not related. organism e is more closely related to organism b than organism f. organisms c and d are more closely related than organisms a and b. phylogenetic trees

Which ocean is on the eastern coast of north and south america? arctic ocean indian ocean pacific ocean atlantic ocean