what are three characteristics of populations?
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This particular typology divides the state into five county types based on three characteristics: Federal classification as a Metropolitan area, size of the largest incorporated community, and population density.\n\nMetropolitan counties (ranging in size from 6,339 to 463,585) are defined by the Federal Office of Management and Budget. A Metropolitan county is one which contains a city of 50,000 or more persons, or which shares more than 20-percent of its labor force with such a county. Nebraska is home to nine such counties, in three Metropolitan areas: Omaha-Council Bluffs, Lincoln , and Sioux City . Notice that two of these Metropolitan areas cross state lines. At the time of the 2000 Census, the nine Nebraska Metropolitan counties were home to 942,503 residents, or 55-percent of the state's population. \n\nLarge Trade Center counties are those in which one will find an incorporated community of 7,500 or more residents. At the time of the Census, thirteen such counties were home to 387, 137 residents, or just under 23-percent of the state's population. These range in size from 11,448 to 53,534. \n\nSmall trade center counties, of which there were 19 at the time of the Census, are defined as containing an incorporated community of 2,500 to 7,499 persons. In 200, these counties were home to 10.4-percent of all Nebraskans, or 178,521 persons. The size range for these counties is 4,089 to 15,396. \n\nSmall town counties are defined here as containing no place larger than 2,499 residents, but having a population density of more than six-persons per square mile. In 2000, 146,290 persons, or 8.5-percent of all Nebraskans, resided in such counties. Small town counties represent populations ranging from 3,087 to 9615. \n\nFinally, this typology identifies 28 “frontier” counties, containing no town of 2,500 or more and having a population density of less than six-persons per square mile (the traditional definition of the American frontier). In 200, these counties were home to 56,812 residents, or 3.3-percent of all Nebraskans, and ranged in size from 444 to 6,198.
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a distinctive cultural traditon, behavior, land, etc... that can be associated with a group of people
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There are some great maps out there correlating skin tone with a modeled optimum at each geographic point.  That optimum is based on balancing the need to avoid burning and skin cancer against the need to obtain UV light for creation of vitamin D.  \n\nOther adaptations relate to features of the environment.  Northern Europeans, Inuit, and Eskimo people have a distribution of fat on their bodies that is optimized for heat retention.  The body shape of a Masai, for example, would be less than optimal near the North Pole.\n\nThere is a hypothesis that many traits are associated with sexual selection or may pertain to the tradeoff between sexual selection and aspects of the environment.  The distribution of fat tissue, particularly in women, in different races has been proposed as correlated with cultural differences in male preference as well as with adaptaion to the local environment.\n\nFinally, there is the feature of accident.  The epicanthal fold of many East Asians might have been beneficial to many Caucasians, but perhaps by chance the feature simply wasn't present in founding populations in Europe.  Characteristics in founding population and gained or lost by chance certainly play a big role in differences in humans from different geographic areas.  Not everythig is adaptive.\n\nBear in mind that this is not based on fixed differences among populations or races of humans, but instead on gene frequency in different populations.  For example, Swedes are lighter in skin color than the Ndebele not because each population has distinct genes, but because those genes differ in frequency.  Among all the loci that contribute to skin color, Swedish populations have very few alleles that code for dark skin.  Each individual Swede will therefore have only a few dark loci where dark alleles are present whereas most loci will have light alleles.  The Ndebele populations and individuals would act in reverse.
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the three properties of earth science are gas, liquid, and, solid. wind (or air moving quickly) is a gas.
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1. Unicellular (some aggregates exist, but there is no specialization of cells)\n\n2. convergent evolution (advantage of certain forms for certain function)\n\n3. expansion of local blood vessels (numerous factors trigger the blood vessels to expand and become leaky, allowing immune cells access to the tissue)
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1. The trait must be genetic.\n\n2. There needs to be variation within the gene between different individuals (e.g. two or more alleles for a single gene).\n\n3. There needs to be differing fitness between alleles (e.g. one allele gives a reproductive advantage over another).
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Biology has become such a vast research enterprise that it is not generally regarded as a single discipline, but as a number of clustered sub-disciplines. This article considers four broad groupings. The first group consists of those disciplines that study the basic structures of living systems: cells, genes etc.; the second group considers the operation of these structures at the level of tissues, organs, and bodies; the third group considers organisms and their histories; the final constellation of disciplines focuses on their interactions. It is important to note, however, that these boundaries, groupings, and descriptions are a simplified characterization of biological research. In reality, the boundaries between disciplines are fluid, and most disciplines frequently borrow techniques from each other. For example, evolutionary biology leans heavily on techniques from molecular biology to determine DNA sequences, which assist in understanding the genetic variation of a population; and physiology borrows extensively from cell biology in describing the function of organ systems.
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I guess the three levels for human development  would be recognition, perception and association and the beginnings of self reflection. \nHope the website below can help.
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research, confidence, experience, eduation...check a website\n\nthat goes into the category of research
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1. Changes in allelic frequencies over time\n2. Change in a lineage of populations between generations
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THE NICHE CONCEPT & ETHNIC DIVERSITY\n\n\nIntro\n\nOne of the striking facts about contemporary society, and indeed of much of recorded history, is the division of the human species into distinct ethnic groups, whose interrelations are sometimes antagonistic and sometimes mutualistic\n\nWhile there are many interesting ways social scientists analyze this phenomenon, ecological theory may provide some additional insights\n\nThis lecture approaches this topic as follows:\n\n1. What is ecological niche theory? (brief summary)\n2. How can we apply this theory to human ethnic diversity?\n3. Discussion of Swat case (Barth reading)\n\nCharacter displacement refers to the phenomenon where differences among similar species whose distributions overlap geographically are accentuated in regions where the species co-occur but are minimized or lost where the species’ distributions do not overlap. This pattern results from evolutionary change driven by competition among species for a limited resource (e.g. food). The rationale for character displacement stems from the competitive exclusion principle, also called Gause's Law, which contends that to coexist in a stable environment two competing species must differ in their respective ecological niche; without differentiation, one species will eliminate or exclude the other through competition.
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faith\nhope\ncharity\nfortitude \njustice\ntemperance\nprudence
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Human characteristics are the traits shared by all humans. While physical characteristics are how we describe any object, living or non-living. My human characteristics are that you have 10 fingers and a brain that can make them type, while my phsyical characteristics are that I have strawberry blond hair, freckles and blue eyes.
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1)Outgoing\n2)Sanitary\n3)Respectful
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number of sides, congurency?, size of angles, distinguishing characteristics
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Physical characteristics tend to be genetic, but can be affected by nutrition, environmental pollution, stress,etc.  Most personality characteristics are probably a combination of nature, nurture and personal choices.
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Evolution and the means to survive.