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15 Cards in this Set
- Front
- Back
SUCCESSION
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the natural changes that an ecosystem goes through as it becomes more established or
mature |
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ECOLOGISTS
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people who study the natural world (nature)
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BOTANISTS
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people who study the plant life of a region
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Cowles believed the "best" ecogolical studies
involved... |
observations (watching for change) in the field over time
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5 LEVELS of ORGANIZATION of the ENVIRONMENT
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(from smallest to largest)
****One Pony Comes Each Birthday 1. Organism 2. Population 3. Community 4. Ecosystem 5. Biosphere |
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3 CLASSIFICATIONS of ECOSYSTEMS
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1. Fresh Water- ponds, lakes, rivers
2. Terrestrial - land 3. Ocean- salty water |
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3 EXAMPLES of ABIOTIC FACTORS which organisms must fight for in the ENVIRONMENT are:
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1. water- abiotic effects the ability of biotic organisms to survive and reproduce
2. sunlight- limits the growth of populations 3. soil- helps determine the types and numbers of organisms able to exist |
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PRODUCER
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organisms that make their own energy
like plants through photosynthesis |
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CONSUMER
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get their energy from eating other organisms, plants or animals
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HERBIVORE
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an animal that eats plants
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CARNIVORE
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gets food from killing and eating other animals (meat)
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OMNIVORE
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an animal or person that eats both meat and plants
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SCAVENGER
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an organism that mostly eats decaying meat or rotting plants (buzzards)
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DECOMPOSER
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an organism that breaks down dead plants and animals and turn them into nutrients (bacteria, fungi, and worms)
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SYMBIOTIC RELATIONSHIPS
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close actions between 2 different species-
MUTUALISM- both species get something out of it ex. bullhorn acacia tree and ants COMMENSALISM- one species benefits and the other is not hurt or helped ex. cattle and egrets PARASITISM- 1 species is helped and the other is harmed (hurt) ex. lice and humans |