Which of these is not part of the body's immune system?
a. antibodies
b. memory cells
c. red blood cells
d. white blood cells

Which of the following requires the action of a first class lever in the body

How is health different for most people in this country today from what it was for people born in 1900? a. people have a shorter life span. b. people today work harder to survive. c. people today live in poorer sanitary conditions. d. people today can focus less on day-to-day survival and more quality of life.

Choose a topic from the reconstruction era listed below. research your topic. write a 300 word report on your findings! (one topic) 1 the conditions in the south during reconstruction 2 lincoln’s assassination 3 the freedmen’s bureau 4 the impeachment of president johnson