TSE2013 - Sains Alam Sekitar

TSE2013 - Sains Alam Sekitar

by Cikgu Afiq ~ Rabu, Ogos 26, 2009

For the first entry about my courses... Principles of Enviromental Science.. I want to share with all of you about human population and Issues...

Before we go in detail, i would like to share with you all about this population growth.. here i have a link.. it shows to us the specific state, area, of growing, decrease human population...<POPULATION GROWTH>  

What we knows about human population trends?? 

HUMAN   -   A human is a member of a species of bipedal primates in the family Hominidae (taxonomically Homo sapiens—Latin: "wise man" or "knowing man"). DNA and fossil evidence indicates that modern humans originated in east Africa about 200,000 years ago. When compared to other animals and primates, humans have a highly developed brain, capable of abstract reasoning, language, introspection and problem solving. This mental capability, combined with an erect body carriage that frees the forelimbs (arms) for manipulating objects, has allowed humans to make far greater use of tools than any other species. Humans are distributed worldwide, with significant populations inhabiting most land areas of Earth. The human population on Earth is greater than 6.7 billion, as of February 2009.

                                                                                                                                   WIKIPEDIA

POPULATION   -   In biology, a population is the collection of inter-breeding organisms of a particular species; in sociology, a collection of human beings. Individuals within a population share a factor may be reduced by statistical means, but such a generalization may be too vague to imply anything. Demography is used extensively in marketing, which relates to economic units, such as retailers, to potential customers. For example, a coffee shop that wants to sell to a younger audience looks at the demographics of an area to be able to appeal to this younger audience.

                                                                                                                                   WIKIPEDIA

TRENDS   -   Long- Term developement.

For the conclusion, Human Population Trends were studied since before century and it was statistically been study for our usage for future.. It is recommended to us to control our population growth since, every 2 years, human population growth increasingly..

The term world population commonly refers to the total number of living humans on Earth at a given time. As of 25 August 2009, the Earth's population is estimated by the United States Census Bureau to be 6.78 billion.^[1] The world population has been growing continuously since the end of the Black Death around 1400.^[2] There were also short term falls at other times due to plague, for example in the mid 17th century (see graph). The fastest rates of world population growth (above 1.8%) were seen briefly during the 1950s then for a longer period during the 1960s and 1970s (see graph). According to population projections, world population will continue to grow until around 2050. The 2008 rate of growth has almost halved since its peak of 2.2% per year, which was reached in 1963. World births have levelled off at about 134-million-per-year, since their peak at 163-million in the late 1990s, and are expected to remain constant. However, deaths are only around 57 million per year, and are expected to increase to 90 million by the year 2050. Because births outnumber deaths, the world's population is expected to reach about 9 billion by the year 2040.^[3][4]                                                                                                                         WIKIPEDIA