It was revealed at a conference that the HeLa cells had line studies.
many of the cell
a) contaminated
b) discovered
c) enhanced
d) replicated

By comparing part 1 and 2 of polar opposites what does it mean by polar opposites

Give two details about the social and economic climate of the 1930s. were these details noted in to kill a mockingbird

“skateboarding is a sport combining grace, courage and skill, and here we see it being born.” based on this passage, what inference can you make about the author’s opinion of skateboarding? a. the author does not think skateboarding is a ‘real’ sport. c. the author feels skateboarding should be illegal. b. the author feels skateboarding is only appealing to very young children. d. the author respects and appreciates skateboarding as a sport.