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23 Cards in this Set
- Front
- Back
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scientific method
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technique used to solve problems and gain scientific information
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steps of the scientific method
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definig the problemm, making a hypothesis, testing out your hypothesis, observing what you found, concluding the results of the experiment
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scientific law
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scientific facts based on experiments which are tested over and ovver- law of gravity
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theories
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possible and true explanations of complex problems- darwin and theory of evolution
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ecology
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study of the interactions of plants and animals and their interrelationships with the physical environment
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population
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all the members of a certain species living in a specific spot and at the same time
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community
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all the interacting populations in the same location at a given time- dependent upon eachother
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ecosystem
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all the living and non living things functioning together in the same area at same time
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biosphere
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the portion of earth in which life exists, numerous ecosystems
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abiotic
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non living
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biotic
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living
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2 conditiions that have to be met to be a self sustaining ecosystem
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constant source of energy and recycling of materials
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examples of limiting factors
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temperature, intesnity of light, ph, amount of oxygen
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autotrophs
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organisms that create their own food- plants
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heterotrophs
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organisms that cannot make their own food
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saprophytes
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decomposers- feed on dead organic matter
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herbivores
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animals that consume plant matter
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carnivores
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an8imals that consume other animals
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omnivores
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consume plant and animal matter
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herbivores
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animals that consume plant matter
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steps of food chain
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producers-primary consumers-secondary consumers-decomposers
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pyramid of energy
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more energy at producer level- energy is lost as it is passed up
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biomass pyramid
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bottom has most mass- top has least
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