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his depends on a number of things including the length of time the individual is going to be withstanding the temperature, what they will be wearing and what physical condition they are in. It also depends on how much humidity is in the air when the person is subjected to the extreme temperature. In order to get a more specific answer to this question, you would also need to highlight whether you are talking about the internal or external temperature a human body would be able to withstand. If you are referring to the internal temperature of the human body, studies show most bodies can only survive up to 108 degrees Fahrenheit, or 42 degrees Celcius, as the proteins inside the body begin to die at around 105F.

In terms of the external temperature that humans can withstand, some fire fighters are able to survive in temperatures of up to 200 degrees C while wearing protective clothing. They are trained and conditioned to be able to tolerate high temperatures, though, and are usually in exceptionally good health and physical shape, so it could be assumed that an average person may not be able to withstand such heat as readily.

When considering endurance, if the body is unable to hydrate or replenish lost fluids, and uses what fluids it does have to sweat to try to cool the body down, it is unlikely the body will be able to survive for very long in extreme temperatures. For example, if a healthy young adult was left outside in temperatures of around 104 degrees Fahrenheit (40 degrees Celcius) without any water, they would not be expected to survive for very long due to dehydration.

Body Temperature's & Effect:

· 39°C (102.2°F) (Pyrexia) - Severe sweating, flushed and very red. Fast heart rate and breathlessness. There may be exhaustion accompanying this. Children and people with epilepsy may be very likely to get convulsions at this point.

· 40°C (104°F) - Fainting, dehydration, weakness, vomiting, headache and dizziness may occur as well as profuse sweating.

· 41°C (105.8°F) - (Medical emergency) - Fainting, vomiting, severe headache, dizziness, confusion, hallucinations, delirium and drowsiness can occur. There may also be palpitations and breathlessness.

· 42°C (107.6°F) - Subject may turn pale or remain flushed and red. They may become comatose, be in severe delirium, vomiting, and convulsions can occur. Blood pressure may be high or low and heart rate will be very fast.

· 43°C (109.4°F) - Normally death, or there may be serious brain damage, continuous convulsions and shock. Cardio-respiratory collapse will occur.

· 44°C (111.2°F) or more - Almost certainly death will occur; however, patients have been known to survive up to 46.5°C (115.7°F).

S.No.	Country	Total Renewable Water Resources	Average Precipitation
1	Kuwait	0.02 km3/yr	2.16 km3/yr
2	Qatar/Malta	0.05 km3/yr	0.81/0.12 km3/yr
3	Gaza Strip (Palestinian Authority)	0.06 km3/yr	0.00 km3/yr
4	Bahrain	0.12 km3/yr	0.06 km3/yr
5	United Arab Emirates	0.15 km3/yr	6.53 km3/yr

Facts

Countries with very limited renewable internal and external water resources such as Israel, Bahrain, Jordan, United Arab Emirates, Gaza Strip, Kuwait, Qatar and others, face a critical situation in terms of water resources. This region is the area of the globe with the lowest figures in terms of absolute and per inhabitant water resources, even when considering the contribution of rivers flowing in from more humid regions of Anatolia (the Euphrates River) and the Caucasus. Precipitation in the region is very low and variable, and the region's water resources are particularly sensitive to drought. During dry years, which occur approximately every ten years, rainfall can be as low as one-third of its long-term average.

While the Near East region covers 4.7 percent of the world's total land area and contains 4.25 percent of its population, the region's water resources are only about 1.1 percent of the world's total renewable water resources (TRWR). The countries of the Near East region have less water resources per person than the world average. The TRWR per inhabitant are less than 1,000 m3/inhabitant in 10 out of 18 countries. The Arabian Peninsula has very limited water resources, with less than 10 mm/year of rainfall on average, and is in a situation of very severe water scarcity, with values between 200 and 700 m3/inhabitant/year. In contrast, the Middle East subregion shows much higher values, due mostly to the abundant flows generated in the mountainous areas of Turkey and of the Caucasus subregion. (a.) By 2025 the U.N. estimates that 1.8 billion people will live in regions suffering from water scarcity and two thirds of the global population will live under water-stressed conditions.

Some oil-rich countries convert a significant amount of saline water from the sea or from poor-quality aquifers (brackish water) into drinking-water. The total use of desalinated water in the Near East region is estimated to be 3.93 km3/year. In absolute terms, three countries (Saudi Arabia, the United Arab Emirates, and Kuwait) are by far the largest users of desalinated water, accounting for 77 percent of the total for the region. Saudi Arabia alone accounts for 47 percent.

Less than 1% of the world's fresh water (or about 0.007% of all water on earth) is readily accessible for direct human use. Agriculture is the largest consumer of freshwater by far: about 70% of all freshwater withdrawals go to irrigated agriculture. The global daily drinking-water requirements per person, 2-4 litres, are minor compared with the 2,000-5,000 litres of water required to produce a person's daily food. Irrigated agriculture accounts for about 70% of all freshwater withdrawals worldwide and more than 80% in the developing countries.

Dirrahoea remains in the second leading cause of death among children under five globally. Nearly one in five child deaths - about 1.5 million each year - is due to diarrhea. It kills more young children than AIDS, malaria and measles combined. In the developing world, 24,000 children under the age of five die every day from preventable causes like diarrhea contracted from unclean water. 884 million people lack access to safe fresh water supplies; approximately one in eight people. 3.575 million people die each year from water-related disease.