Block+3+Desert

Humans do effect deserts, by tearing down plants. For example if some was to go out and chop down a Saguaro Cactus, the Saguaro Cactus will take years to grow back. So humans should not build houses and destroy this fragile ecosystem.
 * __Deserts [[image:dry_desert.jpg width="332" height="240" caption="Dry Desert"]][[image:desert-map.gif width="434" height="193"]]  __**
 * __ How do humans effect the deserts? __**

**​ **

Did you know...


 * Can find at least one desert on each continent except for Europe.
 * Recives less than 10 inches of rain every year.
 * There no clouds in the desert sky. So that means, more heat during the day and less heat at night.
 * Did you know that many Scientists have found many ancient carvings of people that once lived there.


 * ** Animals **
 * Falcon, Elephant, Camels, Frogs(Desert Frogs), Geko, Cyote, Thorny Devil, Roadrunner, Desert Tourtise, Prhonghorn Rattlesnakes, Kangaroo, Elf Owls, Lions
 * [[image:thorny_devil.jpg caption="This is a Thorny Devil"]] [[image:sonorantoad.jpg]] [[image:mojave_rattlesnake2.jpg width="220" height="174"]] [[image:Food_web_Brooklyn.png width="512" height="384" caption="Food Web"]]


 * Deserts
 * Deserts are an arid area that that recives less than 10 inches of water a year. The tempatures of the derserts may vary. Because there are cold deserts and hot deserts. The only continent in the world that you cannot find a desert is in Europe. When it rains in the desert it can cause flash flooding.
 * **Oases**-an island like area thats ground is fertile. Animals and some humans can live in these areas.
 * **Erosion**-is when the surface of something is worn away. This is usally caused by some type of precipitation.
 * There are four types of deserts.
 * Hot Deserts
 * Rain Shadow Deserts
 * Coastal Deserts
 * Polar Deserts

Pictures below are of, Barrel Cactus, Organ Pipe, Brittle Bush, and Ironwood <span style="background-color: #ff8500; font-family: 'Arial Black',Gadget,sans-serif; font-size: 170%;"> Desert Plants __When most people think of deserts they think of a cactus(cacti). There are many types of cacti. There are more than just cacti in the deserts. Joshua Trees, Ocotillos, Jumping Cholla, Mesquite Tree, Brittle Bush, Acacia Bush, Saguaro Cactus, Barrel Cactus, Desert Ironwood, Organ Pipe Cactus and there is alot more.__

Bibliography __