When a mold fills with sand or mud and then hardens a what is formed

Which of the following is not an agricultural innovation that has occurred since industrialization? A. refrigeration B. mechanical threshers C. electricity D. irrigation

Which of the following statements belongs in the box labeled "A" on the chart above? A. Protects the ecosystem of the Nile River Delta B. Controls the floodwaters of the Nile River C. Decreases the amount of arable land D.

At which type of boundary do most earthquakes occur? A. Convergent B. Trench C. Divergent D. Transform

What is the difference between a preserved and petrified fossil?

What was the key effect of the industrial revolution

Which of these has been the result of human activity? a) glaciers melt more b) volcanoes erupt more landslides happen more d) earthquakes happen more

Which types of stars have extremely intense gravitational and magnetic fields?

What happened in Russia as a result of actions taken by Peter the great

At independence, the most prosperous country of former French Western Africa was A. Chad B. Senegal C. Côte d'Ivoire D. Benin

Why is mexico city the capital of mexico?