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41 Cards in this Set
- Front
- Back
when matter and energy moves through ecosystems
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ecosystems energy flow
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provides energy and food for the comsumers
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producers
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uses the product to function in ecosystems
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consumers
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name the 5 types of heterotrophs
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herbivore
carnivore omnivore detritivore decomposer |
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What is the difference between a detritivore and a decomposer?
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Detritivores feed on plant and animal remains while decomposers break down the dead matter.
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Name the 3 ecological methods
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observing, experimenting, and modeling
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list the levels of organization from smallest to largest
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individual, population, community, ecosystem, biome, biosphere
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list the levels of organization from largest to smallest
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biosphere, biome, ecosystem, community, population, individual
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What is the level that scientists study when observing, testing, and modeling
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ecosystem
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major land masses and groups of ecosystems that have the same climate and dominant communities
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biome
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Give some examples of biomes
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tundra, tega, savanna, desert, tropical rain forest
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contains the combined portions of the planet in which all life exists including land, water, air, or atmosphere
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biosphere
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a series of steps in which organisms transfer energy by eating and being eaten
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food chains
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what is the 3rd level consumer?
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tertiary
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connects all of the food chains in an ecosystem
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food web
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shows the relative amount of matter and energy
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ecological pyramid
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the rate at which organic matter is created by producers
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primary productivity
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ecosystem is limited by a single nutrient that is scarce or cycles very slowly
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limiting nutrient
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the result of an increased amount of limiting nutrients
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algal bloom
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any chemical substance that an organism needs to sustain life
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nutrient
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95% of the body is made up of these four elements
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oxygen, carbon, hydrogen, and nitrogen
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one organism is responsible for one change while another is responsible for the next
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biogeochemical cycles
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How does biogeochemical cycles help food chains?
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if something cycles then it changes energy cycled through
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what is the purpose of the water cycle?
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all living systems need water
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What are some of the steps for the water cycle?
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evaporation, transpiration, condensation, precipitaion, runoff
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liquid changes to a gas
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evaporation
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gas cools and changes to a liquid
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condensation
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water particles become too large to remain in Earth's atmosphere then they fall to Earth
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precipitation
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water runs down mountain
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runoff
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water penatrates soil
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seepage
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plants opens a structure and releases water
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transpiration
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nurtrients cyle through this cycle
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nutrient cycle
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what is the purpose of the carbon cycle?
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to produce sugars
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what is the chemical equation for photosynthesis?
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6 CO2 + 6 H2O yields C6H12L6 + 6 O2
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what is the purpose of the nitrogen cycle?
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to produce proteins
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what are the steps of the nitrogen cycle?
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ammonification
nitrification denitrification |
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when a dead organism is decomposed by decomposers an ammonia is released into the soil
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ammonification
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NH3 is oxidized into NO2 or NO3
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nitrification
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nitrogen is released into the atmosphere
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denitrification
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how can nitrogen become stable to where we can use it
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lightening strikes
nitrogen-fixing bacteria |
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what is the purpose of the phosphorus cycle?
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to make DNA and RNA
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