How many electronics are on the earth in 2019

Which of the following best describes the purpose of a nation’s boundaries? a. to limit the movement of goods and people b. to make it easier for cartographers to create maps c. to make the movement of goods and people easier d. to prevent other countries from invading territory

All of the following are extrusive landforms except           a. batholiths.   b. lava plateaus.   c. shield volcanoes.   d. geysers.  

Which of the following graphs represents exponential decay