Living World Topic Keywords

non - living things in an ecosystem

abiotic

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living things in an ecosystem

biotic

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creature that eats animals and/or plant matter

consumer

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an organisim such as bacterium or fungus, that breaks down dead tissue, which is then recycled to the enviroment

decomposer

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a community of plants and animals that interact with each other and their physical enviroment

ecosystem

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the connections between different organisms(plants and animals) that rely on one and other as their source of food

food chain

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a complex hierarchy of plants and animals relying on each other for food

food web

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a set of processes whereby organisms extract minerals necessary for growth from soil or water passing them through the food chain and back to the soil and water

nutrient cycle

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very large ecological areas on the earths surface(or biomes) with fauna and flora(animals and plants) adapting to their enviroment. Examples include tropical rainforest and hot desert

global ecosystem

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an organism or plant that is able to absorb energy from the sun through photosynthesis

producer

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the variety of life in the world or particular habitat

biodiversity

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farming to sell produce for a profit to retailers or food processing companies

commercial farming

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countries are relieved of some of their debt in return for protecting their rainforests

debt reduction

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the chopping down and removal of trees to clear an area of forest

deforestation

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responsible travel to natural areas that conserves the enviroment, sustains the wellbeing of the local people, and may involve education. I t is ususllycarried out in small groups and has minimal impact on the local ecosytem

ecotourism

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the business of cutting down trees and transporting the logs to sawmills

logging

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the removal of solid mineral resources from the earth.These resources include ores,which contain commercially valuable amounts of metals - iron and aluminium;precious stones - diamonds,buildings stones - granite;an fuels -coal/oil

mineral extraction

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the cutting out of tress which are mature or inferior to encourage the growth of the remaining trees in a forest/ wood

selective logging

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removal of topsoil faster than it can be replaced, due to natural(water and wind action) animal and human activity. Topsoil is the top layer of soil and is the most fertile because it contains the most organic nutrient rich materials

soil ersosion

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a type of agriculture producing food and materials for the benefit only of the farmer and his family

sudsistence farming

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actions and forms of progress that meet the needs of the present without reducing the ability of future generations to meet their needs

sustainability

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technology that is suited to the needs,skills,knowledge and wealth of local people in the enviroment in which they live.It uses simple ideas with cheap and readily available materials,especialused in poorer countries,and is enviromentally friendly

appropriate technology

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the process by which land becomes drier and degraded, as a result of climate chang or human activities of both

desertification

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parts of the world that have higher average temperatures and very low percipitation

hot desert

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exhausting the soil by over-cropping the land

over-cultivation

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grazing too many livestock for too long on the land, so its unable to recover its vegetation

overgrazing

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Living World Topic Keywords

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