organization for ecology. Organism‚ species‚ population‚ community‚ ecosystem 3.) Describe the different levels of organization for ecology. An organism is an individual living thing. A species is a group of organisms that are able to produce fertile offspring and share common genes. 4.) Describe the different sources of energy for an ecosystem. (sun‚ organic matter) The sun essentially provides energy for the entire ecosystem because it helps producers produce‚ and the consumers eat the producers
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Anything which we eat to live is called food. Food contains energy. The food (or energy) can be transferred from one organism to the other through food chains. The starting point of a food chain is a category of organisms called producers. Producers are‚ in fact‚ plants. So‚ we can say that all the food chains begin with a green plant (or grass) which is the original source of all food. Let us take an example to understand the meaning of food chain. Suppose there is a field having a lot of green
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together in an ecosystem. First let’s describe the producers‚ these are plants and trees the produce energy into the ecosystem. Next the consumer‚ there are three different types herbivores (deer)‚ carnivores (birds)‚ and omnivores (bears). Then the last category is decomposers‚ which happen to be like a consumer but they feed off animal dropping and dead organisms. This way it can break down and return the nutrients to the soil. They all complete a cycle which in returns works with the ecosystem making
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and population growth are resulting in expeditious changes in natural ecosystems‚ globally‚ and particularly on the self-sufficient ecosystems of Hastings Point. In acknowledgment of this‚ the United Nations’ Kofi Annan presented a report: “We the Peoples: The Role of the United Nations in the 21st Century.” (2000) Annan called for Millennium Ecosystem Assessment in order to establish the consequences of change in ecosystems for the well-being of humans‚ and to specify the importance of conservation
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that initiates or accelerates the recovery of a damaged‚ degraded‚ transformed or entirely destroyed ecosystem‚ mainly to its structural and functional integrity and sustainability‚ as a result of direct or indirect human activities which may involve physical‚ chemical or biotic challenges. Ecosystem can benefit from ecological restoration. There are a few ways it is important to the ecosystem. It can help to stop biodiversity loss. It also helps to provide human society with a wealth of essential
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ENVIRONMENTAL MANAGEMENT Questions for Critical Thinking 1. Explain the importance of making environmental security a key priority of governments. The government should give importance in making environmental security for the benefits of its countryman. The people should make feel secure and aware if they live in a protected place. One of the important security awareness that the government have is having the geo hazard map. Geohazard map is a geological state that represents or has the
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Critically evaluate the consequences of anthropogenic disruption of trophic cascades in terrestrial ecosystems. Throughout the biological history of the earth various mass extinction events have occurred (2) in which worldwide biodiversity greatly declined. Currently‚ we are in the process of the sixth mass extinction (3) which unlike those before it‚ is characterised be the loss of large bodied species and more specifically the loss of apex consumers (4.5). Furthermore; current extinctions are
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Within any community some species may become less abundant over some time interval‚ or they may even vanish from the ecosystem altogether. Similarly‚ over some time interval‚ other species within the community may become more abundant‚ or new species may even invade into the community from adjacent ecosystems. This observed change over time in what is living in a particular ecosystem is "ecological succession". Some specific examples of observable succession include: 1. The growth of hardwood trees
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Invasive Species Threatens the Ecosystem Every life form all over the world depends on the ecosystem for its survival. However‚ the ecosystem can be threatened when there is an excess or drop in resources. Many people will argue that human beings are the primary cause of this economic imbalance‚ but are people the root of this problem? No. There is evidence that many invasive species all over the world has also threatened the ecosystem. All organisms have the potential to become invasive
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is the global ecosystem‚ the sum of all the planet’s ecosystems Global ecology examines the influence of energy and materials on organisms across the biosphere Landscape Ecology A landscape or seascape is a mosaic of connected ecosystems Landscape ecology focuses on the exchanges of energy‚ materials‚ and organisms across multiple ecosystems Ecosystem Ecology An ecosystem is the community of organisms in an area and the physical factors with which they interact Ecosystem ecology emphasizes
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