Term
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Definition
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Term
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Definition
one species living together |
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Term
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Definition
different populations that live together |
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Term
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Definition
all living & non-living things in an area |
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Term
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Definition
a place where an organism lives |
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Term
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Definition
living parts of ecosystem |
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Term
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Definition
non-living parts of ecosystem |
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Term
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Definition
study of living things and their environment |
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Term
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Definition
how plants make food using water, sunlight and carbon dioxide |
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Term
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Definition
group of organisms that are similar and can reproduce (ex. humans) |
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Term
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Definition
water sun oxygen temperature soil |
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Term
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Definition
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Term
Levels of Organization in an Ecosystem |
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Definition
Organism (smallest) (One) Population (many) Community (combination) Ecosystem (largest) (everything) |
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Term
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Definition
| number of births in a population in a certain amount of time |
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Term
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Definition
number of deaths in a population in a certain amount of time |
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Term
Ways to determine the size of the population |
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Definition
1. Direct observation 2. Indirect observation 3. Sampling 4. Mark and recapture |
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Term
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Definition
count one by one all the members |
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Term
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Definition
observe a populations tracks or other signs not each organism |
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Term
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Definition
look at part of the population to determine the whole |
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Term
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Definition
caputure the organism, mark it, release it back into environment, then capture second group to determine population size |
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Term
Causes for changes in population sizes |
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Definition
1. births and deaths -if birth greater than death, population increases -if death greater than birth, population decreases 2. Immigration and Emigration |
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Term
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Definition
moving into the population |
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Term
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Definition
leaving (exiting) a population |
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Term
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Definition
one organism kills and eats another organism |
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Term
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Definition
organism that does the killing |
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Term
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Definition
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Term
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Definition
close relationship between 2 different organisms ( one organism benefits) |
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Term
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Definition
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Term
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Definition
organism parasite lives on or in |
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Term
3 types of Symbiotic relationships |
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Definition
1. Mutualism-both benefit 2. Commensalism- 1 benefits/1 not harmed(hurt) 3. Parasitism- 1 benefits/1 is harmed(hurt) |
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Term
3 types of Interactions among Organisms |
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Definition
1. Competition 2. Predation 3. Symbiosis |
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