Environmental issues are harmful effects of human activitity on the biophysical environment. Environmentalism‚ a socialand environmental movement that started in the 1960s‚ addresses environmental issues through advocacy‚ education and activism. The carbon dioxide equivalent of greenhouse gases (GHG) in the atmosphere has already exceeded 400 parts per million (NOAA) (with total "long-term" GHG exceeding 455 parts per million). (Intergovernmental Panel on Climate Change Report) This level is considered
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The Thyroid Diet It is estimated that 20 million Americans have some type of thyroid disease with up to 60 percent of those people completely unaware of their condition. This means millions are living with the symptoms of a thyroid disorder and either have no idea what’s wrong with them‚ or they have learned to live with the fatigue‚ aches‚ pains‚ and digestive issues as if they are “normal”. The most common types of thyroid disease are Grave’s disease‚ Hashimoto’s thyroiditis‚ goiter‚ and thyroid
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HSC Biology 9.4 The Search for Better Health 9.4-6 You have been looking at the different types of diseases that affect the human body and the natural defence mechanisms that maintain health. In this last part of the module you will look at how increased understanding has led to the development of a wide range of strategies to prevent and control disease. In this part you will have the opportunity to: • discuss the role of quarantine in preventing the spread of disease and plants and animals
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The Importance of Endangered species in our world Importance of Endangered Species in our world INTRODUCTION The term endangered is used by international and national organizations to define plants and animals currently in danger of becoming extinct. Although the term endangered is universally used‚ the definition of an endangered species is greatly varied. In most cases‚ the factors causing an organism to become endangered are human- related. ABSTRACT Geographic distribution
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more. It is being said that the‚ environmental movements in U.S.A arises‚ when the book silent spring written by Rachel Carson came in the market in the year 1962. In this book she had written about the impacts of poisonous chemicals‚ particularly the DDT on the environment. This book had raised the public consciousness. And it leads to the emergence of environmental movements in the U.S.A. The participants of these movements in North are the middle class and upper class people‚ who have concern for
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Major Environmental Issues facing Zimbabwe Zimbabwe is the second most industrialized country in SADC‚ after South Africa. Industries are concentrated around Harare‚ with ore smelters located close to the ore sources (principally along the Great Dyke). A combination of vehicle emissions‚ dust and smoke from domestic fires is a potential air quality concern in larger cities such as Harare. Water is not generally abundant‚ and the maintenance of water quality is a serious issue. Biodiversity preservation
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Harbor seals are marine mammals that have spotted coats in a variety of shades from silver gray‚ black to dark brown. They reach 5 to 6 feet in length and weigh up to 300 pounds. Harbor seals are dimorphic‚ with the male being slightly larger than the female. They are true‚ or crawling seals‚ which means they have no external earflaps. True seals also have small flippers‚ and move on land by flopping along on their bellies. They breathe at the surface and hold their breath while diving. They can
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1. 2. carrying capacity the maximum number of a species or “load” that can be sustainably supported by given environment. k and r strategist reproduction K-Strategists (human)– species that are slow growing and produce few‚ large offspring that mature slowly R-Strategists (oyster)– species that grow and mature quickly and produce many small offspring R- and K- selection theory suggests that natural selection may favour individuals with a high reproductive rate and rapid development over
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Philippine Clean Air Act of 1999 CHAPTER 1: GENERAL PROVISIONS Article One: Basic Air Quality Policies SECTION 1. Short Title. - This Act shall be known as the "Philippine Clean Air Act of 1999". SECTION 2. Declaration of Principles. - The State shall protect and advance the right of the people to a balanced and healthful ecology in accord with the rhythm and harmony of nature. The State shall promote and protect the global environment to attain sustainable development while recognizing the primary
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The Second World War was much bigger and deadlier than the first in every way. It was fought around the world‚ from Norway to New Guinea‚ from Hawaii to Egypt‚ and on every ocean – it was a global war that lasted from 1939 to 1945. Known to have been the most widespread war in history‚ it directly involved more than 100 million people from over 30 countries. But unlike the First World War‚ the Second World War was fast moving and mobile; the use of technology was more widespread and effective. The
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