All the Black Widow spiders in the whole world A. species
B. population
C. ecosystem
D. community

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.

Twind is considered to be an abiotic factor because it.?

Which muscle is responsible for inhalation ?