Which of the following are part of the body s first line of defense against pathogens?
a. white blood cells
b. red blood cells
c. lymph nodes
d. mucous membranes

Lucia is walking barefoot in her yard. she accidentally steps on a nail. how will her nervous system work to generate a reaction? arrange the eventschronologically.

Awolf pack hunts, kills, and feeds on a moose. in this interactions, the moose is a?

Why is the statement not a hypothesis? sunflowers require soil and plenty of sunlight and water to grow and thrive.