For many years, the Great Plains was covered by prairie grass. The grass had tough roots that kept the dirt from blowing away. In the 1920s, many farmers moved to the area and plowed up the grass. In the early 1930s, there was very little rain for several years, and the dirt
turned to dry dust. Strong winds blew dark clouds of dust into the sky, and crops were ruined. Because of the dust storms, the area became
known as the Dust Bowl. To escape the "black blizzards," thousands of farm families were forced to leave their homes.
According to the passage, what was one cause of the dust storms?
O 1. Farmers plowed up the prairie grass.
2. Dark clouds of dust formed in the sky.
0 3. Farmers were left with damaged crops.
O 4. Prairie grass broke the dirt up into dust.

Match each example to the correct type of conflict.

1) earth's crust is made up of relatively rigid plates that ride atop earth's hot, semiliquid mantle. (2) the plates are called tectonic because they're in constant motion. (3) they can move because earth's mantle is a very hot and semiliquid fluid called magma. (4) volcanoes are a result of magma rising up or erupting through a plate, particularly where plate boundaries are moving against each other. (5) also, when plates slide against each other, causing friction along adjacent plate boundaries, earthquakes frequently occur. (6) therefore, we often find volcanoes and earthquakes along plate boundaries. (7) plates may also collide. (8) when that happens, mountain ranges are formed. (9) for example, the collision of the plate carrying the indian subcontinent created the himalayan mountains when it collided with the asian plate. which statement about this paragraph is accurate?

Bella is going to write a research paper. she chose sports as her topic, but her teacher said she must narrow or limit her topic. choose the topic that limits the broad topic of sports the most. a) a history of sports in the united states b) a history of tennis c) rules and etiquette of tennis d) training and equipment for outdoor sports