organic materials which are used for cellular function (Wikipedia). Plants are an example of this kind of organism. A current scientific topic in regard to photoautotrophs is the topic of non-native invasive plants. When a plant is non-native‚ or exotic‚ it means that it is not originally from the United States. They are often brought to an area by accident‚ possibly for agricultural or horticultural purposes. An invasive plant is one that is established‚ then expand and reproduce on their own
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Sexual dimorphism describes the often observed phenotypic or behavioral differences between males and females of the same species. Darwin addressed these differences in his first book “On the Origin of Species” and described them as resulting from “sexual selection”. Sexual selection is both different from natural selection and a mechanism of natural selection. Like natural selection‚ variation in individuals is the driving force behind the differences in their survival and reproductive success
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The article “Rapid Evolution Changes Species in Real Time”‚ written by Jane Braxton Little‚ is a controversial look at evolution. This article presents a clear thesis‚ Little‚ along with scientist David Reznick‚ both believe that the process of evolution can be sped up. The process of evolution is due to environmental conflicts or possibly created by man. Throughout the article Little consistently focuses on her main thesis‚ and provides multiple examples to help back up her claims. Reznick states
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Animal Endangerment Destruction of habitat‚ pollution and hunting. These are the leading causes of why thousands of animals are extinct today. And who causes these? That’s right you‚us‚ humans. They are dying for our enjoyment and comfort. Lets look at one example. They might not be the prettiest of all animals‚ or the cutest‚ or seem like they are important but they are just like us. Javan Rhinoceroses. How many Javan Rhinos do you think are left‚ hundreds? Well actually only less than
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Introduction Endangered animals are one of the most issues that are affecting the earth today. Endangered animals are any species of animals that is at significant risk of extinction due to the dramatic decline in its population and habitat destruction. The endangerment caused by poaching‚ global warming and human activities. All life on earth is part of a nature balanced‚ and all species are dependent on each other to maintain the planet’s ecosystem. Removing one species from the system will have
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Chun Wai Discuss the advantages and disadvantages for plants of living in an aqueous environment compared to a terrestrial one? Introduction: Plants are commonly classified to two main types: aquatic plant and land plant. They have different features to adapt the living environment. What by meant is that they require different adaptions to stay alive in their respective environment such as humidity and structure of leaves. Aquatic plants referred to as hydrophytes or macrophytes. They need a special
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Endangered Species Act) Endangered Species Act “What is an endangered species?” is a question that needs to be addressed before getting known of endangered species act. An endangered species is a population of organisms which is at risk of becoming extinct due to three possible reasons: it is few in numbers. According to the theory of Exponential Growth Curve proposed by Malthus‚ a lower population tends to have a lower reproductive rate and thus a higher risk of going extinct; or a species is
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Biogas Plant The Bio-Gas Plant produces gas from the raw materials of human excreta and cowdung. The residue obtained from the plant is used as the food of fish. It is a system to process livestock wastes into safe‚ high-quality‚ efficient organic fertilizer without exhausting greenhouse gases into the air. These gas plants also contribute to safe-keeping and clean environment by preventing bad odor and contamination of the underground. Furthermore‚ they are capable of generating electric power
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Write an essay title human beings are the most gifted species in the world. Humans are categorised as group of mammals‚ humans occupied the highest population in the globe‚ which is approximately 7 billion. Modern humans like us are also known as homosapien‚ humans are said to be the most gifted species in the world this is because humans are the most intelligent beings on the earth‚ most evolved species‚ the most advance life forms on the earth and classified at the highest level in the food
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"Taking" Endangered Species Act of 1973 (ESA)‚ 16 U.S.C. § 1532(19) (2006). - "The term ’take’ means to harass‚ harm‚ pursue‚ hunt‚ shoot‚ wound‚ kill‚ trap‚ capture‚ or collect‚ or to attempt to engage in any such conduct." § 1538 (a)(1)(B) - "it is unlawful for any person subject to the jurisdiction of the United States to . . . . take any such species within the United States or the territorial sea of the United State." "Knowingly" United States v. McKittrick‚ 142 F.3d 1170‚ 1177 (9th Cir
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