No one knows exactly what causes tornados, but some scientists believe that when warm air meets cold air, a tornado may form. The reason for this is that the warm air is lighter than the cold air, so it rises up fast and meets different winds moving different directions. Under the right conditions, this can cause a tornado. Though there is still much mystery surrounding tornados, many people believe that when warm moist air meets cool dry air, tornados can result.

The dodo bird used to roam in large flocks across America. Interestingly, the dodo wasn’t startled by gun shot. Because of this, frontiersmen would kill entire flocks in one sitting. Unable to sustain these attacks, the dodo was hunted to extinction.

This morning was crazy. My alarm clock was set for PM instead of AM, so I woke up really late. I just threw on some clothes and ran out the door. I rode my bike as fast as I could and thought that I was going to be late for sure, but when I got there everyone was outside and there were firetrucks all lined up in front of school. I guess somebody pulled the fire alarm before class started. It worked out though, because nobody really noticed or minded that I was tardy.

Apples and oranges are both fruits, which means that they have seeds inside of them. Each has a skin, but orange skins are thick and easy to peel. Apple skins are thinner and do not peel easily. Oranges also contain more acid than apples, but both fruits are delicious.

Ray forgot to charge his iPad. As a result, his iPad was dead the next day.

What is the Cause? What is the Effect?

Hurricane Katrina began as Tropical Depression Twelve over the southeastern Bahamas on August 23, 2005. The depression later strengthened into a tropical storm on the morning of August 24, where the storm was also named Katrina. Katrina continued to move into Florida and became a Category 1 hurricane only two hours before it made landfall around Hallandale Beach on the morning of August 25. The storm weakened over land, but became a hurricane again while entering the Gulf of Mexico.

Avalanches (when a lot of snow falls from a mountain) may bury people under them. If the people are not found rapidly enough by rescue teams they will die of suffocation (not getting enough air) or of hypothermia (freezing cold). The chance of surviving an avalanche is as follows: 92% if found within 15 minutes 30% if found within 35 minutes (victims die of suffocation) nearly zero after two hours (victims die of injuries and hypothermia)

What questions does the organizational text structure Cause and Effect answer?

What is the organizational structure of Boxes and Bullets?