Origin of Earth and Evoluation of the Environment MODULE - 1 Environment through Ages 1 ORIGIN OF EARTH AND EVOLUTION OF THE ENVIRONMENT We live on a beautiful planet called earth‚ along with a wide variety of plants‚ animals and other organisms. Our earth‚ however‚ is part of a vast universe. The universe is about 15 to 20 billion years old. The age of the earth is approximately 4 to 5 billion years‚ while human beings evolved only around 2 million years ago. In this lesson‚ you shall learn
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Diversity and Ubiquity of Microbes Pre-Laboratory Questions 1. What environmental settings would you expect to provide rich sources of microbes‚ in terms of overall numbers and different microbial types? Since the most of the microbes are ubiquitous‚ they are readily found in public bathrooms‚ phones‚ countertops‚ door handles‚ kitchen sinks‚ and human body parts such as the face and hands (Sherwood‚ 2017). In addition‚ public places exemplified by hospitals‚ grocery stores‚ and schools present an
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Genetic engineering is a powerful and potentially very dangerous tool. To alter the sequence of nucleotides of the DNA that code for the structure of a complex living organism‚ can have extremely ill effects although the potential benefits can be huge. Before advances in genetic applications‚ gene therapy was unheard of and genetic defects were always inherited‚ plaguing generations. Today genetic testing is widely available‚ such as prenatal karyotyping of chromosomes to check for genetic abnormalities
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causing organisms makes it imperative that the plant be preserved‚ because it offers a potential for the presence of disease resistant genes not present in cultivated varieties. Also‚ there are demands for new characters-- for example‚ high protein‚ improved nutritional factors‚ and fertility restoration. As a result‚ plant breeders require a large and diverse gene pool to meet ever changing needs. A gene bank is a popular term that is used to describe repositories for genes of living organisms. It
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Bibliography: Author unknown‚ 2007‚ www.apbc.org.uk‚ date accessed 26/1/08 Margulis S‚ 2007‚ www.lpzoo.org‚ date accessed 26/1/08 Guerrero D‚ 2007‚ www.arkanimals.com‚ date accessed 26/1/08 Author unknown‚ 2007‚ www.sciencedirect.com‚ date accessed 25/1/08 Author unknown‚ 2007‚ www.ingenta.com‚ date accessed 25/1/08 Author unknown‚ 2008‚ www.cites.org‚ date accessed 26/1/08
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condition‚ genetic diseases can be seen because of heredity. The best example of this is cheetah or “hunting leopard”. In the past cheetah can live almost everywhere on the world- North America‚ Asia ‚ Europe and Africa regions.Ten thousands years ago‚unknown event have been happened. Not oly the number of cheetahes were decrased but also other species have been destroyed. Just 10 cheetahes could survive and they reproduced each other. Therefore ‚genetically identical cheetahes have been born. That is
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The Introduction A Biomolecule is any molecule that is in the human body. There are four major biomolecules‚ they are Carbohydrates‚ Lipids‚ Proteins‚ and Nucleic Acids and they all have different functions and characteristics to classify an organism. Carbohydrates are the most important source of energy for your body‚ this is mainly sugar. Lipids are molecules that contain hydrocarbons and make up the structure and function of living cells. Nucleic acids is an organic system present in living
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A Passage To Africa. (Narrative Article‚ Literary Analysis) A Passage To Africa is a moving‚ touching account of what George Alagiah felt and experienced in a small town in Africa‚ and the beauty and intensity of emotion lies‚ not only in the message behind it‚ but also in every word of every sentence in this article. The title itself is significant. The noun ‘Passage’ is ambiguous; of course the obvious meaning would be that the following is an extract‚ a piece of writing. But it could also be
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years‚ it has just lately begun to cause so much commotion. The reason for this is that it wasn’t until recently that scientists began to master to art of genetic engineering and commonly using them in our animals and crops. Until the mid 1990s‚ the organisms produced by genetic engineering were nearly all confined to laboratories or controlled factory setting. During this time‚ the main use of genetic engineering was to produce medically useful substances such as insulin. Over the past four years‚ there
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Extant microorganisms are organisms from the fossil record that are no longer present on Earth today. True False 2. All cellular organisms can be placed into one of three __________‚ which include the Bacteria‚ Archaea‚ and the Eukarya. ________________________________________ 3. Archaea are cellular organisms that have unique cell membrane __________. ________________________________________ 4. Microbiologists study a variety of organisms‚ but all are considered either
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