True or False:

Infectious diseases are caused by organisms or viruses that enter and multiply within the human body.

(1 point)
Responses

true
true

false

False

Physical lines of defense include

(1 point)
Responses

skin, cielia, and mucous membranes.
skin, cielia, and mucous membranes.

hair.
hair.

nails.
nails.

teeth.
teeth.

Physical lines of defense include?

Responses

skin, cielia, and mucous membranes.
skin, cielia, and mucous membranes.

hair.
hair.

nails.
nails.

teeth.