أرشيف study4uae

فكره حلوه والله .. وبعد احسن جي .. عشان ما نتعب عمارنا وندور ونتلخبط بتقارير الفصل الاول والثاني ..

ان شاء الله الكل يتعااون .. واذا انا سويت شي وخلصته ان شاء الله بحااول احطه اذا ماكنت مضغووطه ..

اشوفكم ع خيير

tundra

Main idea
The word tundra derives from the Finnish word for barren or treeless land. The tundra is the simplest biome in terms of species composition and food chains The tundra covers about 20% of the word . The tundra in the north of canada is called a polar desert or cold desert . It doesn’t have sand , it has no camels , and there are no oases because al the water is frozen solid for almost 10 months of the year .
The report
# Growthforms: typical are ground-hugging and other warmth
preserving.
# forms including: tussock-forming graminoids, mats or cushion plants, often evergreen members of the heath family, rosettes, dwarf shrubs, some of which are deciduous in habit.
# Climate: The high latitude conditions of Koeppen's ET climate type that impact life in this biome include; extremely short growing season (6 to 10 weeks), long, cold, dark winters (6 to 10 months with mean monthly derives from the Finnish word for barren or treeless land. The temperatures below 32° F or 0° C.), low precipitation (less than five inches/year) coupled with strong, drying winds. Snowfall is actually advantageous to plant and animal life as it provides an insulating layer on the ground surface.
# Edaphic controls: Permafrost, not cold temperatures per se, is generally believed to be what prevents tree growth. Furthermore, freeze-thaw activity, a thin active layer, and solifluction during the warmer months contribute to strong controls on vegetation patterns and create a mosaic of microhabitats and plant communities. Soil: No true soil is developed in this biome due to the edaphic factors mentioned above.
# Fauna: Strategies evolved to withstand the harsh conditions of the tundra can be divided among those species that are resident and those that are migratory. Among the small number of bird (e.g., ptarmigan) and mammal (e.g., muskox, arctic hare, arctic fox, musk ox) species that reside year-round on the tundra one commonly finds:
* Morphological adaptations
large, compact bodies following Bergmann's and Allen's rules, a thick insulating cover of feathers or fur, pelage and plumage that turns white in winter, brown in summer
( 3 )

* Physiological adaptations
ability to accumulate thick deposits of fat during the short growing season. Fat acts as insulation and as a store of energy for use during the winter, when animal species remain active.
# Distribution: The tundra biome is restricted to the high latitudes of the northern hemisphere in a belt around the Arctic Ocean. Many of its species, XXXX plant and animal, have circumpolar distribution areas.
# Within the tundra biome a latitudinal zonation of communities is realized:
# High Arctic Tundra: essentially confined to the islands of the Arctic Ocean and characterized by scattered lichens and mosses on care rock surfaces and perennial forbs growing in protected crannies among sharp, ice-fractured rock debris .
# Middle Arctic Tundra: restricted to the Arctic Coastal plain where level terrain, a thin active layer, and freeze and thaw result in patterned ground, or rock polygons. The sorting of particles by freeze-thaw activity results in a waterlogged center to the polygons, a microhabitat conducive to sphagnum moss and sedges; and an outer ring that is drier and provides a microhabitat favorable to forbs and some dwarf heaths.
# Low Arctic Tundra: the majority of the tundra lies on better drained slopes with greater depth to permafrost than is encountered on the Arctic coastal plain. Here there is a greater frequency of woody shrubs: willow, birch, and various berry-bearing members of the heath family. Along streams willows and alders may be 10 feet high. On south-facing slopes needleleaf evergreen trees (spruce and fir) are established and represent the northernmost extensions of the great boreal forest to the south. (Such areas where two biomes interdigitate are known as ecotones.)
Finally
The tundra is very far north , Its called the " land of hhe midnight sun " . whether deserts are cold , I think it is difficult to live in any of them . so the tundra is very cold and hot . For 2 months per year the sun does not shine in the Arctic .

References
Pupils Book 12 ** Internet htte:\\www.radfort.edul\tundra.html# tunmat






اتمنى استفدتوو :)

طأآنكيؤؤؤ..

بس بغييت انا..عن >>How to green the desert<<

ممكن تقرير عن healthy food ^__^

أبا عن diabetes ( السكري ) لو سمحتوا =)

تقرير انجليزي الصف حادي عشر عن المناخ وعددالسكان و العادات والتقاليد في الإمارات

الله يخليييييييييييكم ترى هذه أول مشاركة لي اتمنى من كل قلبي انكم تلبون طلبي عالأقل تحسسوني انكم مهتمين بلأعضاء

المهم ابغي تقرير عن
custom and tradition in the uae

و السموحة عالقصور

اريد تقرير عن دولة عربية مع كا عناصر اتقرير
المقدمة والخاتمة وطبعا الموضوع
[لووو سمحتوا ساعدوني[/ []

بغيت تقرير + بور بونت بلليييييييييييز اي تقرير

والسموحه من القصوور..

شكلي غلطت يوم طلبت من هني .>>
السموحة....:s23::s23:

شكراعلى هذا تقريرالجميل ورائع

ممكن تقرير انج عن المخدرات فيه مقدمة وخاتمة ؟؟؟
ابيه ضرووري احين قبل تاريخ 20/3/2009
اتمنى تساعدوني

أبا تقرير عن اي دوولة بلييييييييييييييز !
ما عدا الامارات خخخخ

ممكن تقرير عن الهيدروجين بس يكون بالبوربوينت

ممكن تقرير عن مشروع في دولة الإمارات + مقدمة و خاتمة
مثل مشروع النخيل في دبي أو غيره بس يكون المشروع ما خلص ....

.













.

هذا تقرير عن diabetes:s48::s48:

إنشالله يعجبكم

بغيت تقرير او بحث عن السكري

بلييييييييييييييييييييييييييييييز

مشكورمشكورمشكورمشكورمشكور
مشكورمشكورمشكورمشكور
مشكورمشكورمشكور
مشكورمشكور
مشكور

مشكور

(*_*)

مشكور مشكور مشكور مشكور
مشكور مشكور مشكور
مشكور مشكور
مشكور

طالبكم بطلب ردو عليا

ابا حل الانجليزي الملون لو سمحتو.....

صفحة (6-7-8-9-10) .............

ما عليج أمر ... بس بغيت برقراف عن أنفلونزا الخنازير

أنأ بغيت براقراف عن برج العرب بلييييييييزززززز بسرعه اباااه

مرحباا ثانكس كتيير

أنا بدي حل الورك بوك من صفحة 1 _5 بليـــــــــــــــــز

بليييييييييييز .. بلييييييييييييز
بغيت تقرير عن اخمد بن ماجد

بس انجليزي

السلام عليكم

ممكن تقرير بسيط عن الـFood Chain لا يتجاوز الصفحة الواحدة

و شكراً لكم

ممكن تقرير عن الفود تشين يعني السلسله الغذئيه بلييز لوسمحتو ابيه باتجر ويايا البور بيوند
ويويا الغلااف مدرسة طنب
منطقة راس الخيمه
الاسم محمد علي راشد
الصف الحادي عشر ادبي /3

ويايا البور بيوند بسرعه لو سمحتو بلييييييييييز

ووووووينكم

انا ابا تقرير عن food chain او عن اي حيوان مثل fox او hawk اي شي بس يكون صفحه وحده دخيلكم ضروري

ابا تقرير عن السلسله الغذائية

ووووووووووووينكم

3bo0od 999 كتب:هذا تقرير عن diabetes:s48::s48:

إنشالله يعجبكم

فديتج الملف اللي حاطتنه كله صور :(33):

بس يسلموو ماقصرتي

السلام عليكم ورحمة الله وبركاته

اخواني الكرام

اريد منكم مساعدة بسيطة وسهله

برجراف (تعبير) عن المدارس في دولة الامارات بالانجليزي

100 كلمة على الاقل

ارجوكم بسرعه

هاااااااااااااااااام

مع تحياااااااتي

أنا بعد أبا تقرير عن food chain
بلييييييز إلي عنده لا يبخل علينا

Food chain
By
Muhamed Hafiz,,
Grade
11 \ 2 Scientific
A.Q.School

**********************
The food chain comprises all living things and is a true reflection of their interdependence and the complex balance of life. If one animal's source of food disappears, such as from over-fishing or hunting, many other animals in the food chain are impacted and may die.
Breaking one link on the chain means all of the organisms above that link are in threat of extinction (like the domino effect). Since the food chain provides energy that all living things must have in order to survive, it is imperative that we protect it.
Why should I be aware of this?
A significant portion of the Pacific Ocean, twice the size of Texas, is full of plastic. Some of these minuscule pieces of plastic are so small that they are barely visible to the eye. As they swirl in the seas and oceans, they resemble fish food and are eaten by the small fish. The plastic thus enters the food chain.
Evidences of plastic's entry into the food chain were seen when dead bodies of a large number of seabirds that had been washed ashore were found to contain plastic: things like bottle caps, cigarette lighters, tampon applicators, and colored scraps. Apparently these resemble baitfish to the seabird. Scientists say these toxins cause obesity, infertility and other problems amongst humans.
How does this affect me?
In recent times, directly or indirectly man has caused the maximum damage to the food chain. He has hunted animals, razed forest for farming and development, and wreaked havoc everywhere. This adverse impact on the food chain might affect our health, the environment and our planet.
When we spray pesticides, we not only put the food chain in danger, but also affect out health by introducing chemicals in our food.
All about food chain
The food chain consists of four main parts:
• Sun -- The sun is the source of energy for all activities on the earth.
• Producers -- This includes all plants, which harness the energy of the sun and make their own food.
• Consumers - These include all organisms that cannot manufacture their own food and eat food manufactured by something else. While herbivores are primary consumers and the second largest biomass in an ecosystem, carnivores or animals that eat the herbivores make up the third largest biomass, and are also known as secondary consumers. Consumers include
• herbivores --animals that eat plants.
• carnivores -- animals that eat other animals.
• parasites --animals that live off of other organisms by harming it.
• scavengers -- animals that eat dead animal carcasses.
• Decomposers: These mainly comprise bacteria and fungi that convert dead matter into gases such as carbon and nitrogen to be released back into the air, soil, or water. Without decomposers, the earth would be covered in trash. Decomposers also recycle the nutrients so that it can be used again by producers.
XXXX the sea and the land have a complex food chain.
On Sea
All sea creatures rely on other sea creatures for food. At the bottom of the food chain here are the sea plants, krill and plankton. These are eaten by many types of fish and animals such as the snail, shrimp, jellyfish, and sea star. These small animals and fish in turn become food for larger fish, such as the tuna and mackerel, which are then eaten by larger fish and animals, such as the shark and dolphin. Sharks are much needed to maintain the balance of the marine ecosystem. However, they are killed for food and other things.
On Land
On the land plants or bugs are eaten by smaller animals who in turn are eaten by larger animals. At the top of the food chain on land are humans who eat many of the plants and animals on earth. A break in the food chain can impact everyone, humans also. To understand the food chain in the wild, take the example of the zebra and the grass. The zebra eats the grass. Larger predators like the lion eat the zebra.
Food chain and the environment
Air Pollution
Human activity cause air pollution and lead to global warming. Apart from increasing the sea levels, rise in earth’s temperatures can cause other alterations in the ecology, including modifying the quantity and pattern of rainfall -- which can have its own ramification on the food chain.
Lower agricultural outputs, glacier melting, lesser summer stream flows, genus extinctions and rise in the ranges of disease vectors are likely to be the other consequences. Global warming has already made species like golden toad, harlequin frog of Costa Rica extinct and a number of species are threatened with extinction.
The rise of carbon dioxide emissions and the resultant climate warming from the burning of fossil fuels are making oceans warmer and more acidic which in tuen are damaging coral reefs, the world's most diverse marine ecosystem.
Plastic pollution
The plastic pollution is not just a cause of alarm because it is not biodegradable but it is also making its way into the food chain. Its obvious victims include dead seabirds that have been found on shores, their stomachs full of small plastic items such as bottled water caps, cigarette lighters, tampon applicators, and colored scraps that, to a foraging bird, resemble baitfish. These small plastic waste items are not just affecting sea birds but the entire marine foodchain from whales down to zooplankton. There is a growing and disturbing proof that we are ingesting plastic toxins constantly, and that even slight doses of these substances can severely disrupt gene activity.
Hunting
By hunting animals nearly to extinction, everything above the animal in the food chain is put in danger. A 'chain reaction' in the food chain can be perilous!
Overfishing
As overfishing depletes prized species like tuna, cod and swordfish, commercial fishermen are moving farther down oceanic food webs in search of a catch, it has been observed. If this quest is pursued to its logical end, scientists warn, it will lead to a wholesale collapse of marine ecosystems.
A team of Canadian and American scientists say that the overfishing of large sharks has led to an explosion of small predators that are devastating populations of XXXXlfish.
The steep drop in shark numbers along the U.S. Atlantic coast since 1970 has caused an increase in 12 of 13 species - rays, skates, and smaller sharks eaten mainly by large sharks.
The abundance of one of these species, the cownose ray, has increased 20 times and its prey - scallops, clams, oysters, and other XXXXlfish - have been reduced. The loss of scallops has reduced water quality because scallops and other XXXXlfish filter sea water. And the cownose ray is now feeding voraciously on other XXXXlfish, like oysters and clams.
90 degrees
An iceberg more than four times the size of Greater London is damaging marine wildlife off the coast of Antarctica by blocking sunlight to a huge expanse of ocean, It has created a build-up of sea ice that has killed the tiny marine phytoplankton - a key element in the Antarctic food chain.
Phytoplankton turns sunlight into food for smaller marine life, notably the shrimp-like krill which is an important source of food for fish, which are in turn eaten by seals and penguins. Sea ice stops sunlight getting to the shallower depths of the sea where phytoplankton grow. The result is that the C-19 iceberg has created the XXXXXalent of a desert.
Copper Bytes
• One sea animal dissected by Dutch researchers contained 1,603 pieces of plastics.
• One symptom of this practice of fishing down the food chain is that second-level creatures normally preyed upon by the fish at the top of the chain are increasingly appearing on restaurant menus.
• An iceberg more than four times the size of Greater London is damaging marine wildlife off the coast of Antarctica by blocking sunlight to a huge expanse of ocean. This build-up of sea ice has killed the tiny marine phytoplankton - a key element in the Antarctic food chain.
• Human activity is currently responsible for emitting 30 million tons of CO2 each year, 12 million tons of which accumulate in the atmosphere.
Resources
Copperwiki.

مطلوب تقرير عن
unhealtier behavior

يتكون من مقدمة وموضوع وخاتمة ومصادر ومراجع اكيد
يكون من 4صفحات
الخط يكون 12
ولو عندكم power point
ارجو وضعه
وشكرا مقدما

بليز ابغي حل ص15 ف الوورك بوك

السلام عليكم

مشكوور على جهودكم

بس لو تساعدوني بتقرير

عنfood chin

ابا مشروع الاحياء
للحادي عشر ادبي

انا عندى بحوث وتقارير بس انا عضو جديد لسا مش بعرف احط البحوث ازاى ارجو المساعدة وانا تحت امركم كلكم وشكرا اى استفسارات كلمونى على الاميل دا ياهو ميل hussam_a10

لو ما عليك امر ابي ملف انجاز للانجليزي طلبه الاستاذ اليوم ويا بعد يومين
ارجوكم ساعدوني