Why are enzymes chemically specific

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.

According to the cladogram, which organisms have roundworms as a common ancestor?

What does natural resource management aim at ?