Which of the following does not provide scientific evidence of changes in populations over time? Select one: a. biochemistry b. paleontology c. biogeography d. phylogeny

Organize the word parts according to where they appear in a medical term.

Cholera is a bacterial infection of the small intestine. vaccination provides protection against cholera. the cholera vaccine is made up of weakend form of the bacteria that causes cholera. the vaccine will stimulate blank production and elicit an immune response. if the infection occurs again, the bodynwill produce an even greater attack on thre bacteria because of blank.

What are the red sacs between the spines of sea stars used for? pls !