When a word root has what attached so it can combinedwith another

there is no passage.

sorry but whats the question?

answer: b (host)

viruses use the cells of living organisms to reproduce. the cell which is used by virus is called as "host cell". it is a living cell in which virus multiplies, example bacteria, plant or an animal cell.

in this, the virus is a parasite, which uses host cell for its benefit (reproduction) by using the cell machinary of host cell.

educational segregation in the us prior to brown.

the members of the u.s. supreme court that on may 17, 1954, ruled unanimously that racial segregation in public schools is unconstitutional.

judgment and order of the supreme court for the case.

u.s. circuit judges robert a. katzmann, damon j.

the u.s. supreme court's decision in brown v. board of education marked a turning point in the history of race relations in the united states. on may 17, 1954, the court stripped away constitutional sanctions for segregation by race, and made equal opportunity in education the law of the land.