Plate tectonics are important to geoloigists because they explain how the continents make up the earths crust.
Continental shelf...........................
Well right now there are issues such as unemployment, government corruption, crime, access of clean water, and energy shortages.
In the future there could be issues such as lack of better healthcare treatments and equipment and better education.
The answer would be the 4th option. (Rainwater soaking into the ground). Soil erosion is commonly caused by rainwater soaking into the ground.
Answer:
Tundra ecosystems are treeless regions found in the Arctic and on the tops of mountains, where the climate is cold and windy
Explanation: