Презентация на тему: Adaptation

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Adaptation
Human adaptation
Heat cold adaptation of human
Adaptation
Adaptive type of population
Adaptation
Adaptation
Adaptation
Adaptation
Adaptation in arctic indigenous people
What do you need to survive in the Arctic?
Adaptation
Adaptation
Adaptation of inhabitants of tropic
Adaptation
Adaptation in arid regions
Adaptation
Adaptation
Videos on Related Topic
Adaptation
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Первый слайд презентации: Adaptation

In  biology,  adaptation  has three related meanings. Firstly, it is the dynamic evolutionary process that fits  organisms  to their environment, enhancing their  evolutionary fitness. Secondly, it is a state reached by the population during that process. Thirdly, it is a  phenotypic trait  or  adaptive trait, with a functional role in each individual organism, that is maintained and has  evolved  through  natural selection.

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Слайд 2: Human adaptation

Humans  have biological plasticity, or an ability to  adapt  biologically to our environment. An  adaptation  is any variation that can increase one's biological fitness in a specific environment; more simply it is the successful interaction of a population with its environment.

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Слайд 3: Heat cold adaptation of human

Physical  adaptations  in  human  beings are seen in response to extreme  cold, humid  heat, desert conditions, and high altitudes.  Cold adaptation  is of three types:  adaptation  to extreme  cold, moderate  cold, and night  cold. Ordinarily the body rids itself of excess  heat  by sweating.

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Слайд 4

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Слайд 5: Adaptive type of population

Adaptive type  – in  evolutionary biology  – is any  population  or  taxon  which have the potential for a particular or total occupation of given free of underutilized home habitats or position in the general economy of nature. In  evolutionary  sense, the emergence of new adaptive type is usually a result of  adaptive radiation  certain groups of organisms in which they arise categories that can effectively exploit temporary, or new conditions of the environment.

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Слайд 7

Such evolutive units with its distinctive – morphological and anatomical, physiological and other characteristics, i.e. genetic and adjustments ( feature ) have a predispositiona for an occupation certain home habitats or position in the general nature economy. Simply, the adaptive type is one group  organisms  whose general biological properties represent a key to open the entrance to the observed  adaptive zone  in the observed  natural  ecological complex. Adaptive types are spatially and temporally specific. Since the frames of general biological  properties  these types of substantially  genetic  are defined between, in effect the emergence of new adaptive types of the corresponding change in  population genetic structure  and eternal contradiction between the need for optimal adapted well the conditions of living environment, while maintaining genetic variation for survival in a possible new circumstances.

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Слайд 9

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Слайд 10: Adaptation in arctic indigenous people

Northern people found many different ways to  adapt  to the harsh  Arctic  climate, developing warm dwellings and clothing to protect them from frigid weather. They also learned how to predict the weather and navigate in boats and on sea ice. The indigenous peoples of the North American Arctic include the  Eskimo  ( Inuit  and  Yupik / Yupiit ) and  Aleut ; their traditional languages are in the  Eskimo - Aleut  family. Many Alaskan groups prefer to be called Native Alaskans rather than Native Americans; Canada's Arctic peoples generally prefer the referent  Inuit.

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Слайд 11: What do you need to survive in the Arctic?

Stay hydrated. Consume lots of calories and food high in fat. Protect yourself from the wind. Insulate yourself from the cold. Protect extremities. Stay dry. Don't get lost. Avoid weak ice.

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Ringed seal and bearded seal are the most important aspect of an Inuit diet and is often the largest part of an Inuit hunter's diet. Land mammals such as caribou,  polar  bear, and muskox. Birds and their eggs. Saltwater and freshwater fish including sculpin,  Arctic  cod,  Arctic  char, capelin and lake trout.

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Слайд 14: Adaptation of inhabitants of tropic

Tropical people drink less water because their food contains a lot of water. They know how to use thousands of edible, medicinal, and poisonous plants and how to grow crops in the forest's poor soil. They also know how to hunt and fish without driving the animals to extinction. The blood concentrations of water and salt adjust to allow greater cooling, the blood vessels alter to get more to the skin, and so on. Athletes use this process and train in harsher climates to cause more profound body adaptations.

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Слайд 16: Adaptation in arid regions

A  region  is  arid  when it is characterized by a severe lack of available water, to the extent of hindering or preventing the growth and development of plant and animal life. Environments subject to  arid  climates tend to lack vegetation and are called xeric or desertic. People  have been  living in the desert  for thousands of years and have adapted to its extreme conditions. 2.5 million  people live  in the Sahara; this is including a couple of cities, such as Khartoum, which border the  desert.

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Their traditional lifestyle has adapted to these extremely arid conditions. Their  nomadic lifestyle  means they do not settle in one area for long. Instead, they move on frequently to prevent exhausting an area of its resources. They have herds of animals which are adapted to living in desert conditions, such as camels. Their tents are built to allow air to circulate within them, keeping them cool. Animal hair is used to insulate them, to keep the tent cool during the day and warmer at night.

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Modern adaptations to arid conditions With both money and technology, desert areas can be developed to cater for modern lifestyles. Las Vegas, in the Mojave Desert, is one of the fastest-growing cities in the USA. The city of Las Vegas is lush and green in comparison with the surrounding desert. This is possible because 90 per cent of the water Las Vegas needs is imported from the Colorado River. The remaining 10 per cent comes from ground water. The demand for water is not sustainable and the city has started to plan to reduce the demand for water. One way is that new homes have restrictions on the amount and type of lawns that they can have. The authority also recycles water where it can.

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Слайд 19: Videos on Related Topic

https://youtu.be/X9zXCajF4pA https://youtu.be/hTfBSIYTG4k https://youtu.be/1kJiL7AnOiU

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Последний слайд презентации: Adaptation

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