What are three products first developed for use in space that people now use in their everyday lives?

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.

In the water cycle , when does water undergo a chemical change

9. the history of life on earth is recorded in