Presentation Transcript

1. The Desert By: Abdulla Al Qahtani 6A

2. What is the desert • Deserts cover about 1/7th of the earth's surface. • A desert is a place that experiences very little rain measuring 25cm or less a year. • It is one of the harshest places on earth. • Deserts have extremely high temperature in the day and very low temperature at night. • Deserts are made of sand rocks, mountains, and sand. • Desert sands are often rocks, which has weathered down to sand over the centuries http://library.thinkquest.org/J0110521/what_is_a_desert.htm http://pubs.usgs.gov/gip/deserts/what/

3. Animals in the desert Snakes Snakes can live in thedesert becausethey are cold blooded. They need direct sunlight and heat to warm their bodies to helpthem move. Their need for water is not high. • Kangaroo rats • The kangaroo rat can live without water for a long time, they have the strongest urine of all mammal,even more concentrated than the camel. • They get their moisture from the seed diet. • They have strong hearing sensation Camels A hump that enables the camel to survive without food for long periods of time. The hump does not store water. They can drink up to 46 liters of water in one session, which will last for long periods. Camels have two rows of long eyelashes, and are able to close there nostrils for protection from desert sand storms. The split hooves with broad pads are for more stability, and prevents them from sinking into the sand. • http://www.answersingenesis.org/articles/cm/v26/n3/kangaroo-rats • http://www.desertmuseum.org/kids/oz/long-fact-sheets/krat.php http://wiki.answers.com/Q/What_adaptations_does_a_camel_have_to_survive_in_its_environment http://wiki.answers.com/Q/Why_are_snakes_able_to_live_in_the_desert

4. Plants in the desert Sidra tree The Sidra tree lives in the desert environment especially in the Arabian Gulf. • It can survive the desert heat and lack of water. • It gives small fruit in winter time. Palm tree The palm tree can survive in different countries and different weathers. The palm tree grows dates. It stores water in their trunks. Palmyra Palm trees are native to Africa and prefer well drained soil and do not take cold very well. Its fruit is large, weighing 6 pounds. Once you remove the outer skin you will find a mass of sweet smelling orange flesh. Cactus The cactus has long roots can catch water from the desert rains. The stems do the job of storing the food and water The stems of the cactus grow upwards rather than out. The sharp pointed needles, keep desert animals away from sucking out valuable liquid. The cactus takes 2 centuries to grow. http://en.wikipedia.org/wiki/Cactus http://en.wikipedia.org/wiki/Acacia_tree http://inchinapinch.com/hab_pgs/terres/desert/plants.htm

7. Good Human Activities • People make protectorates in the desert for hunting, building factories, making roads, protecting animals and plants from humans, cars and engines. • Info from mom

8. Bad human activities • Construction work ruins the desert environment. People throw trash in the desert, road vehicles in unrestricted areas all over the desert. • Their vehicles leave tracks on the soil, which will scar the land for decades. The developments of mechanics are ruining the desert sands. • Info from my Mother

9. Solutions for human activities • Protecting the remaining deserts, by educating the public on the importance of the natural biodiversities. • Finding solutions to satisfy different believes and culture. • Incorporating laws to preserve the plants and animals in deserts from destruction. • The use of road vehicles only on designated roadways • http://oregon.sierraclub.org/conserv/hidsrt/ • http://environment.nationalgeographic.com/environment/habitats/desert-threats/

10. The End of my presentation • Thank you for your time