Công nghệ Gen, lai tạo giống mới là thành tựu của công nghệ trụ cột nào?

Because north america is in a it has a variety of biomes and climates. a. high latitude zone c. middle latitude zone b. middle longitude zone d. high longitude zone select the best answer from the choices provided a b c d

What evidence does the writer give to support his argument about coral reefs? a) he speaks of the activities of coral polyps. b) he describes the composition of the great barrier reef. c) he emphasizes the ways in which coral reefs are fragile. d) he points out the ways that scientists do research on the reefs.

Which of the following geographic terms could be applied to the countries of central america? a. isthmus b. canal c. peninsula d. island