competition within a specific species and the competition between different species‚ respectively. In this lab‚ we conducted 3 basic experiments. Our goal was to observe the effects of the competition in each instance.The first one was to observe the intraspecific competition between the wheat plant species‚ the second was for the intraspecific competition between the mustard plant species. The third was the interspecific competition of the wheat and mustard species together. The latter experiment’s
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suggested to demonstrate the gradual transition from one species to another through a multitude of changes. In essence‚ the transitional fossils are the remains of the species that have gone extinct‚ and these species are represented on the phylogenetic tree. As reportedly most species go extinct‚ finding fossilised remains of them is virtually the only way of proving their one-time existence. However‚ only a very tiny fraction of species fossilise and can be found in fossil
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concept - which‚ granted‚ is a big one. Biodiversity: Life‚ the world‚ the variation of life for the entire globe. It’s a big idea with a long history. Biodiversity found on Earth today consists of many millions of distinct biological species‚ the product of four billion years of evolution. But the word “Biodiversity” itself is actually quite new. "Biodiversity" was coined as a contraction of "biological diversity" in 1985. Clever eh? And as politicians‚ scientists‚ and conservationists
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as a single species or race‚ or as two‚ as three...or as sixty-three” (Darwin‚ 83). In The Descent of Man Darwin argues whether humans are one species or if the races of the world make up their own respective species. Darwin considers both the differences and similarities between races‚ and using both biological and social observations‚ he concludes that the different races put together make up one species--homo sepiens. When determining whether the separate races make up one species or not‚ Darwin
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abiotic characteristics of the rock platform -Examining and comparing the richness of species in sub habitats on the rock platform -Measuring the abundance and distribution of some molluscs and algae on the rock platform During the investigation we undertook four fieldwork activities such as: -Investigation of adaptations to life on a rock platform -Abiotic Factors on and around the rock platform -Species richness of Sub-habitats on the rock platform -Distribution and Abundance of Selected
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that all organisms are made by God in their current state and require no additional modification. As a result‚ many scientists in the 1700s explained that an organism’s compatibility to its environment is because of the principle that God created a species to suit a specific environment. Contrary to the beliefs of early philosophers and scientists‚ an organism’s compatibility to its environment is caused by natural selection. Natural selection‚ the process in which individuals with certain heritable
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few decades. We bulldoze forests to make way for concrete jungles‚ depriving many species of the flora and fauna native to their habitats. We dump all types of waste into our rivers and seas‚ doing irreparable damage to freshwater and marine species. We hunt for sport and use animal parts to cater to our exotic tastes. All our actions are resulting in the dwindling of wildlife. We are losing plant and animal species at an accelerated rate. Ladies and gentlemen‚ what can we do to stop this massacre
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Natural Selection The theory that members of a species each have slight variations from each other‚ and that these variations have the ability to enable some members of a species a survival advantage in certain environments. As a result of having a variation that increases their likelihood to survive‚ they are allowed to propagate‚ and their offspring have an increased likelihood of survival with the passage of the variation. Other members of the species who lack the variation die‚ and over time the
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UNIT I Diversity in the Living World CHAPTER 1 The Living World What is Living Diversity in the living world Taxonomic Categories Taxonomical Aids The living world is very wonderful. It contains wide range of life forms. 1.1 What is living – Living organisms are self-replicating‚ evolving and self-regulating interactive systems capable of responding to external stimuli. Living organisms exhibit following distinctive characteristics. All Living Organisms
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Of the recognized 110 species which live in mangroves‚ only about 54 species (in 20 genera from 16 families) make up the group of species that occur almost exclusively in mangrove habitats. Many of these species are found in the similar conditions to the tropical conditions of a wide range of salinity‚ tidal range‚ anaerobic soils and high light intensity. Plant biodiversity
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