Which of the following is not believed to produce long-term climate
change? *
O
1. movement of the continents
2.dust storms
3.changes in Earth's orbit around the sun

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