What physical geographic features are used to define regions?

An earthquake’s epicenter can be determined from arrival time data recorded on a(

Based on current rates the earths human population is expected to grow how much by 2050

(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