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Description
Flashcards by Molli Beth Herndon, updated more than 1 year ago
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Created by Molli Beth Herndon
over 1 year ago
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| Question | Answer |
| ecology | study of how living things interact with each other and their environment |
| organism | a single living thing that obtains food, water, and shelter to live, grow, and reproduce in its habitat |
| species | a group of similar individuals that are able to reproduce |
| population | group of interbreeding organisms living in the same area |
| community | all the population in an ecosystem |
| ecosystem | includes all the living and nonliving factors of an environment |
| birth rate | number of organisms born over a specific time within a population |
| death rate | number of organisms that die over a specific within a population |
| immigration | when organisms move into a population |
| emigration | when organisms move out of a population |
| limiting factor | an environmental condition or resource that limits the size of a population or organisms |
| carrying capacity | the largest population an area can support a population usually stays near its carrying capacity due to limiting factors it is habitat |
| extinct | no longer exist |
| biodiversity | variety of life number of species in an ecosystem or on the entire earth measures the health of biological systems and determines if there is danger that too many species become extinct |
| deforestation | removing large areas of forest for commercials or residential development |
| long term environmental changes | gradual allow populations the opportunity to adapt |
| short term environmental changes | such as droughts, floods, and fires do not give population time to adapt tot eh change and force the to move or become extinct |
| population size | number of individual organisms in a given area |
| pioneer species | first to populate an area after a natural disaster |
| competition | struggle between organisms to survive as they attempt to use the same limited resources |
| ecological interactions | competition, predation |
| pollution | an unwanted change in the environment caused by waste or the byproducts |
| overpopulation | the concern that the number of humans will outgrow the natural resources |
| genetically modified organisms | altering the genetic code of an organism to achieve disease, pest, or drought |
| factory farming | using vast cut areas of land for agricultural and livestock farming to produce large quantities of veggies, fruit, and/or animals |
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