What was the second design of cellphone

Which mantle is under the crust the upper mantle or the lower mantle i think it's upper let me know if i'm right

Which of the four major uses is predicted to change the least by 2020?

In terms of alternation of generations, the internal parts of the pollen grains of seed-producing plants are most similar to a ) moss sporophyteb) moss gametophyte bearing both male and female gametangiac) fern sporophyted) fern gametophyte bearing only antheridia