Mars One is a very complex project. What kinds of problems will make it difficult? What kinds of people, in terms of professions or areas of expertise, will be critical to the project?

Which choice is a major detail from paragraph two? a) the great wall is a large network of several walls and towers. b) the great wall looks like a long wall snaking its way across china. c) the great wall was constructed over hundreds of years beginning in 221 b. c. d) the great wall construction encouraged several independent kingdoms to unite.

Which lines from ovid’s "pyramus and thisbe" establish setting?

Which type of pronoun clearly shows what is being referred to a specific person place or thing