Team members

                             Names

• MUHD HAIRI      (Leader)

• IRFAN  

• HALIM 

• IZWANDY  

            WE AS A GROUP PRESENTS A PIECE OF WORK        ON "DESERT"...........:)HOPE YOU ENJOY IT AND GIVE SOME FEEDBACKS AFTER WATCHING IT ,THANK YOU......:)

  THESE ARE SOME PICTURES OF THE "DESERT"and some video TO MAKE THIS PRESENTATIONS MORE FULFILL ......JUST SEAT  BACK and RELAX.......

                                             ENJOY!!!........:) 

                                  What is a "DESERT".......

DESERT is a lanscape or region that received an extremely low amount of percipitation and has only 400millimeters of percipitation.In this situation it can't support growth of most plantsTHERE.A common definition distinguishes between  true DESERTS  which is much more lesser percipitation and it only received 250millimetres10 in) of average annual precipitation, and semideserts or steppes, which receive between 250 millimetres (10 in) and 400 millimetres (16 in) PHYSYCAL FACTORS.DESERT also can discribed as a place that has lesser than water but more Evapotranspiration (ET) happens.Which means another words to discribed the sum of evaporation and plant transporation from earth and surface of atmosphere.AND FOR YOUR INFORMATIONS THERE'S TWO TYPE OF DESERT

WHICH IS HOT DESSERT AND COLD DESERT. 

• Light (availability of sunlight in the ecosystem)

Deserts take up about one third (33%) of the Earth.Hot deserts usually have a large diurnal and seasonal temperature range, with high daytime temperatures, and low nighttime temperatures (due to extremely low humidity). In hot deserts the temperature in the daytime can reach 45 °C/113 °F or higher in the summer, and dip to 0 °C/32 °F or lower at nighttime in the winter. Water vapor in the atmosphere acts to trap long wave infrared radiation from the ground, and dry desert air is incapable of blocking sunlight during the day (due to absence of clouds) or trapping heat during the night. Thus, during daylight most of the sun's heat reaches the ground, and as soon as the sun sets the desert cools quickly by radiating its heat into space. Urban areas in deserts lack large (more than 14 °C/25 °F) daily temperature variations, partially due to the urban heat island effect.

                 Water (water quality in the ecosystem)

 ATACAMA is the driest place on earth.To prove that ATACAMA is the most driest place in the EARTH is ATACAMA  may not have had any significant rainfall from 1570 to 1971,It is so HOT that mountains that reach as high as 6,885 meters (22,590 feet) are completely free of GLARISE.also the part of southern part from 25sto27s may have been glarier -free of QUATERNARY,so between this and DESERT i prefer DESERT is much more better because at least  Rain does fall occasionally in DESERT,but DESERT strom are often violent.A record 44 millimeters (1.7 in) of rain and it once fell within 3 hours in the Sahara. Large Sahara storms may deliver up to 1 millimeter per minute.Normally it will dry ,and it called called ARROYOS or WADIS, and it can quickly fill after heavy rains and it is very DANGEROUS.

                                                     Temperature (temperature of ecosystem) 

Hot and Dry Deserts temperature ranges from 20 to 25° C.The extreme maximum temperature for Hot Desert ranges from 43.5 to 49° C. Most Hot and Dry Deserts are near the Tropic of Cancer or the Tropic of Capricorn. The precipitation in Hot and Dry Deserts and the precipitation in Cold Deserts is different. Hot and Dry Deserts usually have very little rainfall and/or concentrated rainfall in short periods between long rainless periods. This averages out to under 15 cm a year.Hot and Dry Deserts are warm throughout the fall and spring seasons and very hot during the summer. the winters usually have very little if any rainfall.

                                CLASSIFICATIONS OF LIVING ORGANISM 

Food Web 

HAIRI.MSWMM  

THIS IS A HAND MADE VEDIO.......THAT MAKE FROM US......

Interrelationship in Ecosystem

PREY..... 

As prey

Signage in Addo Elephant National Park reminding humans as to their status of prey

A lone naked human is at a physical disadvantage to other comparable apex predators in areas such as speed, bone density, weight, and physical strength. Humans also lack innate weaponry such as claws. Without crafted weapons, society, or cleverness, a lone human can easily be defeated by fit predatory animals, such as wild dogs, big cats and bears. There are even recorded instances of lone humans being preyed upon by large carnivores (see Man-eater). However humans are not solitary creatures; we are social animals with highly developed social behaviors. Further humans and our ancestors (such as Homo erectus) have been using stone tools and weapons for well over a million years. Anatomically modern humans have been apex predators since we first evolved, and many species of carnivorous megafauna actively avoid interacting with humans; the primary environmental competitor for a human is other humans. The one subspecies of carnivorous megafauna that does interact frequently with humans in predatory roles is the domestic dog, but usually as a partner in predation especially if they hunt together. Cannibalism has occurred in various places, among various cultures, and for various reasons. At least a few people, such as the Donner party, are said to have resorted to it in desperation.

PREDATOR.......

Social predation offers the possibility of predators to kill creatures larger than those that members of the species could overpower singly. Lions, hyenas, wolves, dholes, African wild dogs, and piranhas can kill large herbivores that single animals of the same species could never dispatch. Social predation allows some animals to organize hunts of creatures that would easily escape a single predator; thus chimpanzees can prey upon colobus monkeys, and Harris's Hawks can cut off all possible escapes for a doomed rabbit. Extreme specialization of roles is evident in some hunting that requires co-operation between predators of very different species: humans with the aid of falcons or dogs, or fishing with cormorants or dogs. Social predation is often very complex behavior, and not all social creatures (for example, domestic cats) perform it. Even without complex intelligence but instinct alone, some ant species can destroy much-larger creatures.

Useful Links

Plagiarism is a strongly discouraged.

Include the links of all websites you obtained information from to complete your ecology wiki. 

For example:

Wild World @ nationalgeographic.com ( http://www.nationalgeographic.com/wildworld/terrestrial.html ) 

•   http://www.nationalgeographic.com/wildworld/terrestrial.html 
• YOUTUBE.COM 
• GOOGLE.COM