Why is the northeast plain important to east asia? a. it is an alluvial plain. b. it has fertile black soil that is important for farming. c. it serves as a boundary between china and india. d. it contains one of the world’s most populated areas.

(10 points) 1. cone 2. rectangle 3. triangle 4. circle 5. cylinder a. perpendicular cross section of a pyramid b. perpendicular cross section of a cylinder c. parallel cross section of a sphere d. shape created when a rectangle is rotated about the y-axis e. shape created when a right triangle is rotated about the y-axis