gr.7 ecosystems
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
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| Abiotic | the nonliving components of an ecosystem
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| Acid rain | rain,snow or hail that contains acids formed from sulphur and nitrogen-containing pollutants in the atmosphere
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| Adaptation | special strutures and behaviours that help an organism to succeed in its ecosystem
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| Biodegradable | products made from things that were once living and that can be broken down by decomposers
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| Biological Amplification | the process that results in increasing concentrations of a harmful chemical at each higher level of a food chain
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| Biome Bioshphere | a collection of related ecosystem
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| Biotic | living things that effect the environment
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| Carbon cycle | a matter cycle for carbon as it used reused in respiration and photosynthesis
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| Carnivore | a consumer that eats other animals
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| Chlorophyll | a green substance found in plants; used to capture and store radiant energy from the sun
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| Community | all of the organisms in an ecosystem
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| Consumer | a organisms that cannot make its own food and must eat other organisms
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| Decompose | to break down materals into smaller peices or molecules into smaller molecules, so they can be reused in an ecosystem
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| Decomposer | an ecological niche; an organism that breaks down materails so they can be reused ina ecosystem
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| Ecological Niche | the way of life or the role of the organism in an ecological
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| Ecological Pyramid | is a graphical way to show the effects of loss of energy
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| Ecology | the study of the relationships among living things and between living things and there environment
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| Ecosystem | all of the relationships among living things in a community and their interactions with the abiotic factors in their environment
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| Food Chain | an organizing device that show a feeding pathway, made up of several organisms
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| Food Web | an organizing system made up of many intersecting food chains
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| Herbivore | a consumer that eats only plants
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| Leaching | a process in witch water seeps downward through soil or other materails, dissolving chemicals and carrying them into lower layers
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| Matter cycle | a description of how matter is used and reused by living things
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| Nutrient | a chemical that is essential for the growth of living things
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| Organism | a single living thing
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| Pesticide | chemicals designed to reduced the populations of unwanted organisms, both plants and animals
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| Photosynthesis | the process plants used to make sugers out of carbon dioxide and water using radiant energy from the sun; releases oxygen
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| Population | the number of organisms of the same species living in a community
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| Primary Succession | succession that occurs in an area where ther was no community before; ends when a climax ecosystem is emblished
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| Prodcer | an organism that can make its own food
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| Recycle | means to reuse something
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| Respiration | the process used by living things to break down sugers for the energy stored in them; uses oxyen and releases carbon dioxide and water
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| Secondary Succession | succession that occurs after th partial or complete destruction of a community; the damaged community is replaced by another or by a seriess of others communites until a stable community is restablished
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| Succession | a natural process in witch the dominant species in a ecosystem are gradually replace by others
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| Water Cycle | the cycle that collects, purifies, and redistributes th earth's water; driven by energy form the sun
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