Matching chromosomes are called pairs.

Which of the following systems in absorbing oxygen and releases carbon dioxide

Would really appreciate it, i have an idea but not completely sure

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.