surface of water and mud. Algae were evolving at the water’s edge‚ and one group – probably the charophytes – gave rise to plants. Cooksonia‚ a simple branching plant a few centimeters tall‚ evolved by 430 million years ago. It took another 160 million years for the taller Psilophyton to evolve. Then the evolutionary pace picked up. It took only 60 million years for plants radiate from the swampy lowlands to high mountains and nearly all places in between. They did so through modifications in
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PROTECTION OF NATIVE SPECIES There are numerous ways that non-native or exotic species can have a negative impact on our environment and the diversity of life on our planet. The statistics are very alarming and more attention should be paid to the problem and finding a solution to the problem before the cost is more than we can bear. When compared with other threats to Biodiversity‚ the introduction of exotic species ranks second with habit destruction ranking first for being the cause of extinction
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The Coca plant is in the Kingdom Plantae‚ the Phylum Magnoliophyta‚ the Class Magnoliopsida‚ the order Mapighiales‚ the Family Erythroxylacae‚ the Genus Erythroxylum‚ and the Species Erythroxylum Coca. The Coca plant originates in Northwestern South America particularly Columbia‚ but it can also be found in Peru‚ Venezuela‚ and Bolivia. The Coca plant can grows to a height of 7–10 ft‚ the branches are straight‚ and the leaves are green tinted ovals. The plant also has small yellowish-white flowers
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Primary Post “The surrogate species approach is the most cost effective means for establishing national and global conservation priorities.” Conservationists are challenged with the problem of protecting a range of species at minimal costs. As such conservationists have to prioritize to help those in most need of assistance or trouble (Myers et al. 2000). Therefore‚ many conservationists have adopted the surrogate species approach as a shortcut to aid with the conservation priority decision (Caro
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Plants Desert Baobab Tree The baobab tree is the iconic tree of the African Sahara. It is readily recognized by its enormous trunk and‚ by comparison‚ scrawny stems and twigs. It is the source of many legends among the tribes of the area‚ and is also a rich source of traditional medicine. In a land where rainfall is limited and it is rare to find even tiny bushes‚ the gigantic baobab tree thrives. It is able to do so due to a number of unique adaptations that it has perfected over the course
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Many species today are impacted by threats from changing environments. These threats can pose a great amount of harm to a specific species‚ which in turn‚ can ultimately cause it to be endangered. A species is considered endangered when a threat is relatively high and a population is rapidly declining in size. One of the most effective ways to identify an endangered species is through acknowledging habitat loss‚ introduced species‚ pollution‚ and overconsumption. This paper will investigate two endangered
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IS LANGUAGE UNIQUE TO THE HUMAN SPECIES? by Ulla Hedeager INTRODUCTION The assertion that humans differ from animals in their use of language has been the subject of much discussion as scientists have investigated language use by non-human species. Researchers have taught apes‚ dolphins‚ and parrots various systems of human-like communication‚ and recently‚ the study of animal language and behaviour in its natural environment rather than in the laboratory has increased. It is my aim to discuss human
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popular film that entertained the notion that scientist could bring back an extinct species with DNA from mosquitos that were carefully preserved in amber. Now‚ a group of scientists are trying to bring back the great passenger pigeon‚ Ectopistes migratorious. According to the Firefly Encyclopedia of Birds‚ there were 3‚000 million passenger pigeons in the late 18th Century‚ making it one of the most abundant species in the world (p. 253). These birds relied heavily on large numbers to find food and
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Invasive Species The invasion of non-native species is one of the United Nation’s top five environmental concerns; however the term invasive species is one which many people do not fully understand. It is a term used in the media‚ by governments and ecologists‚ to indicate to the public that a new species has entered an area‚ and usually very little is said afterwards‚ however many people do not realise the severity and long term effects of invasive species in their area and worldwide. Unfortunately
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Andrographis paniculata is a herbaceous plant in the family Acanthaceae‚ native to India and Sri Lanka. It is widely cultivated in southern Asia‚ where it is used to treat infections and some diseases‚ often being used before antibiotics were created. Mostly the leaves and roots were used for medicinal purposes. | | edit]Etymology Andrographis paniculata is an erect annual herb extremely bitter in taste in each and every part of the plant body. The plant is known in north-eastern India as
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