What is the difference in trophic level efficiency between herbivores and carnivores?

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.

What is the primary function of the nervous system?

When a gasoline engine burns gasoline, what type of chemical reaction is occurring?