...Human Population Growth SCI/230 October 26, 2014 The world population growth is defined very simply as the number or estimated number of total births in a given period, usually a year, minus the number of total deaths. The difference between these two numbers tells us how many people are being added to the world population each year. The growth rate is this number divided by the total population and multiplied by 100 to get a percentage. While the world saw an increase in the total human population by more than 80 million in 2010, demographers note that the population growth rate has been declining since the early 1960s. It's in this phenomenon of a declining growth rate that we find the key difference between the two curves. Moreover, one of the two fundamental growth curves proposed to explain increases in human population is the exponential growth curve. This curve assumes that the population growth rate remains fairly constant and that the population will continue to double in an increasingly shorter period of time. It's called an exponential growth curve because it plots the output of an exponential equation. In the years since the early 1960s, observed declines in the rate of population growth -- the percentage of the world population added per year -- began to suggest that population growth is not likely to be exponential. In exponential equations, population growth rate does not slow down, it continues at a constant rate. In the logistic growth curve by contrast...
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...Assignment: Human Population Growth There are two types of population growth and they are expressed in the form of models explaining each theory. The exponential population growth model describes population’s expansive capabilities to an unlimited size and scope. Each generation is calculated using specific factors to formulate the amount of population growth by the births and subtracting deaths over a specified period of time. The rate of a population relies on the growth of the population groupings that are calculated. A population’s size can be greatly reduced or increased by environmental factors. For example, if there is a drought or severe cold weather, population increases can be greatly reduced because of the lack of necessary resources such as food and water. The lack of competition for certain food sources, because of reduced populations, can have the reverse effect on other animals and their populations can be increased. Even though exponential growth is possible, it is not sustainable because eventually the populations will consume all resources that are necessary for the continuing of the species. The logistic population growth model describes the reality that natural environments do have limits to their natural resources that benefit population growth. These limits keep species populations in check and allow only a certain amount of individuals to live successfully in any one environment. The growth rate of populations, in the logistic model, decreases as...
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...Human Population Growth The world population growth is defined very simply as the number, or estimated number, of total births in a year, minus the number of total deaths. The difference between these two numbers tells us how many people are being added to the world population each year. To find this number, two types of population growth curves are proposed to explain increases: the exponential growth curve and the logistic growth curve. The exponential growth curve is when the population grows at a constant rate over time. It does not take into account competition, lack of resources, disease, etc. In other words, according to the exponential growth curve, the only thing that controls how fast or slow the population grows is the birth rate. On a more realistic level comes the logistic growth curve. This curve factors in the important reality that states, as the number of individual organisms in the population increases, resources need to increase as well. Also, human population growth HAS changed over time, but these changes were based on numerous factors that included disease, birth rate, economic conditions, etc. However, overall, the human population growth has slowed over the past century and projections indicate that the environment is near its carrying capacity. With this, food production must dramatically increase to keep up with the growing population or our population will be in trouble. While population growth, of any species, may be beneficial to...
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...HUMAN POPULATION GROWTH SCI/230 The human population started off slow until the beginning of the 1900s when the industrialization of the world changed mortality rates. This is evident by the logistic growth curve of the population from year one to the 1800s, when the population reached the 1 billion mark. The population did not grow rapidly at this time and it actually remained flat for almost 1500 years at the beginning. The population then grew rapidly as advancements in medicine and nutrition in both Europe and the United States allowed humans to take control of their population's growth rate. This exponential growth curve showed that the population continued to increase at a steady rate as births rose and mortality rates declined. This exponential increase saw the population explode from 2 billion in 1927 to 3 billion in 1960. After this exponential increase the developed nations of the world developed contraceptives to control birth rates and the population growth declined to almost zero. This has not been the case in developing nations however as death rates have dropped but high birth rates have continued. This increase in population has created a large ecological deficit. In the United States alone the population requires twice the land and resources than what is available. This has caused humans to invade other habitats and force animals to either relocate or become extinct. This is creating the problem as humans face overpopulation and overconsumption...
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...Human Population and Environmental Problems by PAUL R. EHRLICH, Ph.D.(Kansas) Professor of Biology and Director of Graduate Studies, Department of Biological Sciences, Stanford University, Stanford, California 94305, U.S.A. rather small number that are thought of as 'important' forms of wildlife—will have a dramatic negative feedback effect on the capacity of our planet to support human life. This is because, although politicians and laymen tend to focus attention on air pollution and water pollution as the most serious environmental problems, in fact the most devastating of all is the destruction of the life-support systems of our planet. These are the natural ecosystems that provide us with a series of public-service functions without which we cannot persist indefinitely on this Earth—such functions as maintaining the quality of the atmosphere, controlling roughly 99 % of the potential agricultural pests, recycling of our waste products, and many other services that we cannot perform for ourselves (Ehrlich et al., 1973). The third message which I would like to give you is that the time for research as a major approach to the world's problems is long past. If you are trapped in a forest, downwind from a forest fire, and it is raging towards you at ten or more kilometres per hour, you do not immediately convene a committee to study reforestation—you call for water. In human society, calling for water basically consists of promoting political action...
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...Stunting Facts on Human Growth Hormone * Human growth hormone is commonly referred to as HGH. It is a hormone produced by the pituitary gland to help the body grow and develop into adulthood. It is partly responsible for regulating metabolism. This hormone helps to improve bone density, muscle mass, and essentially help us grow. As we age, the production of this hormone decreases (*Crenshaw, 2011). . * HGH has been proven to help with the effects of Osteoporosis. It increases bone production, therefore increasing bone mass. This hormone seems to reverse the effects of aging by decreasing weight gain from hormone imbalance, increasing bone mass, and increasing the capacity of the lungs for exercise. HGH increases sharpness of the brain as well as energy intensity (*Bond, 2011). * Women and men experience many adverse side effects from taking HGH supplements. Women can suffer from stroke, heart disease, blood clots, manly attributes, leukemia, and even acne (*Crenshaw, 2011). * There are several human growth hormone supplements offered directly to consumers. Some of these products are approved by the FDA while others are not. The claims on the products are what sell them, whether they are approved or not. Three of the top rated supplements are Secratatropin HGH, Avatropin, and Humovox. Secratatropin HGH sells for a retail price of $139.95 and claims to increase HGH production without having any side-effects. Avatropin retails at $99.99 and claims to promote HGH...
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...On the off chance that you aren't sure what HGH is, it's human growth hormone, a normally happening hormone in the human body. We require this hormone to develop and recover bone, muscle, organ and all connective tissue as kids and as we develop into adulthood. This hormone is available for us to empower growth and everything that accompanies it. In youthfulness, the emission of human growth hormone is at a pinnacle. This is the time of the most quick growth of our bodies. As grown-ups, HGH production diminishes through our 20s and afterward keeps on diminishing as we age. When we achieve 40 years old, we are producing less than half of what we were delivering at 20 years of age! The decreased production of hormones is normal. In any case,...
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...HUMAN GROWTH AND DEVELOPMENT 2012/2013 MODULE LEADER: FIONA BOYD STUDENT NUMBER: N0371372 WORD COUNT: 2450 This assignment is aimed to discuss a case study using child development and adult development theories to explain the relevance of these theories to health and social care practice. It is going to briefly summarise the of major theories used by health care professionals to provide care and determine practice related decisions. The discussion is going to focus mainly on the attachment theory, Bowlby, J (1969), Levinson, D (1986) theory of life structures and Erikson, E (1963)stages of life theory. According to Banks (2001), these theories are there to help health professionals describe or predict patterns and behaviour considered to be within the parameters of normality for human beings and assess the need for intervention. Some major theories used by health care professionals today embrace the works of Freud (1856) and Bandura (1925) who challenged the view of human development and human nature by suggesting that humans are driven largely by emotions and motives of the unconscious and , a social cognitive theorist who believed humans learnt from observation of other people rather than from a pre-disposed notion of biological (nature) influences...
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...Statement of Authenticity: I, Gregory Mandl, hereby declare that my work is my own and all sources used for information have been acknowledged appropriately. Index: Page 1-2: Why the current trend in human population growth is a danger to our planet. Page 3-4: How we can solve the problem concerning the current trend in human population growth. Page 5: Ethical issues concerning population control. Page 6: Personal view on the issue. Page 7: Bibliography. “Is the current trend in Human population growth a danger to our planet?” Yes. The current trend in Human population growth is a serious issue, and, as of late, it has been the focus of numerous scientific debates and studies. Why is it a danger to our planet?...
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...Human Population Growth SCI 230 August 16, 2013 Tammy Botten The term population growth refers to how the numbers of individuals in a population increases or decreases, with time. This growth is controlled by the rate of which new individuals are added to the population. Between the years 1800 and 1930 human population has doubled from one billion to two billion and then doubled again by the year 1975. This substantial growth in population has led to a decrease in population and biodiversity in many other species. The two types of population growth that can both be seen in human population growth are exponential growth and logistic growth. In population showing exponential growth the individual are not limited by food or disease. However in most real population both food and disease becomes important as condition becomes crowded. Logistic growth model is a more accurate representation of population growth because it takes into account that there are outside factors that may affect the growth. Logistic growth this is frequently used to model biological growth pattern where there’s an initial exponential growth period followed by leveling off as more as the population is infected so as the food supply or some other factors that limits further growths. Exponential growth means that some quality grows a fixed percentage rate form one year to the next. If the population has a constant birth rate through...
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...Human Growth Population needs to be left alone, because either way it goes the population is going to keep growing. People need to leave it alone there is nothing they can do about it. Human Population Growth cannot be controlled by anyone so they might as well leave it alone. All Races are coming to the population to make it grow every each day so I think it should be left alone. I think it should be left alone because, women are still going to have kids and make the population grow even more. The people who need to control it are the men because they are making the babies and making the population growth. No one can just stop people from having kids, they are going to do whatever they want until it’s time to stop. People just need to leave...
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...Abstract This paper analyzes what epigenetics precisely is as well as the effects of epigenetics on our human body throughout time. I further my analysis by going in depth on the effects epigenetics can have on a child going all the way back to their grandparent’s medical history and life experiences. The different articles provide a better understanding on how epigenetics can impede a person drastically, but also ensuring us that scientist are working efficiently to find out ways to manipulate the epigenome. This paper examines my own personal Family History Questionnaire findings and how they are relative to epigenetics. The last part of this paper explores a Bluzone Life Expectancy Questionnaire which identifies the longevity of my life by asking me various questions about everyday experiences and how I can improve my health. Life expectancy Epigenetics is defined as superior to the genome (Epigenetics, 2007). It simply commands the genome on how to work, how much to work and when to react in a specific way. The epigenome tells our cells precisely what type of skin, hair type, and heart we should have. Twins may be born exactly comparable with the same gene structure, but the epigenome is the part of a person’s gene structure that is altered from the day they are born. A genome can be linked to a computer’s hardware that makes up a computer while the epigenome is seen as the software the runs the computer entirely. Epigenome can change a cell just by a person’s diet...
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...biology would have been the same. However, we don’t know what drives the rewiring and maturation of the brain. It may be that these carefully documented rear-to-front brain that is uncultured in our society and in our society alone. It may be that the way we treat kids is reflected in their own behavior is. Without knowledge on the mechanisms through which brain maturation works, it can’t be accepted as a causal explanation for adolescent behavior. It just allows us to take all these psychological observations that we’re familiar with lack of planning, novelty-seeking and rephrase them as neutral processes. That’s useful to science, but doesn’t answer any questions about how to raise your child, or what kind of society fits best with universal human needs. Neuroscientists don’t examine kids from far away tribes. In fact, they stick to college undergrads, usually from the psychology department. That’s no biggie, but it’s something to keep in mind when you’re reading stories about how brain science explains why we are and who we...
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...APA Paper APA Paper Rachel Kidd Hill College Abstract Basically in this paper you deal with the after effects of loss. You also see what type of psychological disorders people have. This type of thing happens all the time around the world. The biggest event that impacted the United States has been the 9/11 attack on the twin towers. You see Charlie who had to deal with a loss of his entire family during the attacks, it really messed him up and he basically shutdown to anyone and everyone. APA Paper After watching the movie Reign Over Me it opened my perspective on a lot of things dealing with mental disorders. How people act after a loss of a family member, how people treat you after something has gone wrong. Reign Over Me portrays people with different mental disorders throughout the movie. It is easy to pen point when someone is suffering from a loss, whether it be a family member or it be a loss of a job, pet, or friend. Dealing with someone suffering from Post-Traumatic Stress Disorder can be a very delicate thing, because something as simple as hearing a certain word, sound, or person can trigger something bad. All people deal with things in a different way. In this particular case Charlie deals with the loss of his family by making him not remember (Bender, Mike). He doesn’t even acknowledge his mother and father in law when they try to spend time with him. He would avoid talking about the...
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...HUMAN RESOURCE MANAGEMENT AND BUSINESS GROWTH As business organisations move further into the twenty-first century, Sims (2002: 13) asserted that it is becoming absolutely clear that the effective management of an organisation’s human resources (HR) is a major source of competitive advantage and may even be the single most important determinant of an organisation’s performance over the long term. With the integration of HR issues with business issues and of human resource processes with management processes, it is only logical that the HR staff function should be integrated with the business organisation, rather than being a separate entity. Companies are radically restructuring the HR function and redefining its roles. According to Gunnigle, Heraty and Morley (2002: 2), the objectives of integrating it with business strategies include reducing overhead expenses, focusing time and resources on activities that add the greatest value to the business; reducing attention given lower value activities, aligning staff more closely with the business, as part of the management team at each level and addressing important people-related business issues more effectively. For a sole trader who wishes to grow the business through engaging the services of additional people, it is of foremost importance that the business owner review his or her recruitment and selection policy and all the associated documentation including job descriptions and personnel specifications, application forms etc...
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