Which is an endocrine function?
a. sweat glands release sweat to the skin
b. esophageal glands release mucus into the esophagus
c. salivary glands release saliva into the mouth
d. the pineal gland releases melatonin into the bloodstream

Which conditions are necessary for natural selection to occur? select all of the answers that apply. a. inheritable adaptations vary among individuals. b. the population size is increasing. c. more individuals are born than can survive. d. fitness varies among individuals. e. the environment changes suddenly and drastically.

This is a type pf behavior that animals are born with and them to survive

If a strand of dna has 35% thymine. what is the percentage of cytosine, adenine, guanine?