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flashcards
| Question | Answer |
|---|---|
| What is an ecosystem? | All the living and nonliving things that interact in an area. |
| What is habitat? | The place where an organism lives and that provides the things it needs. |
| What is a biotic factor? | A livin gpart of an ecosystem. |
| What is a abiotic factor? | A nonliving part of an ecosystem. |
| What is photosynthesis? | The process in which organisms use water along with sunlight and carbon dioxide to make food. |
| What is a species? | A group of organisms that are similar and reproduce to produce fertile offspring. |
| What is a population? | All the members of one species in a particular area. |
| What is a community? | All the different populations that live together in an area. |
| Waht is ecology? | The study of how living thing interact with each other and their environment. |
| What is population denisty? | The number of individuals in a specific area. |
| What is an estimate? | An approximation of a number based om reasonable assumptions. |
| What is birth rate? | The number of births in a population in a certain amount of time. |
| What is death rate? | The number of deaths in a population in a certain amont of time. |
| What is immigration? | Moving into a population. |
| What is emigration? | Leaving a population. |
| What is a limiting factor? | An environmental factor that prevents a population from increasing. |
| What is carrying capacity? | The largest population that an area can support. |
| What is natural selection? | Process by which individuals that are better adapted to the environment are more likely to survive and reproduce than others. |
| What is adaptation? | The behaviors and physical characteristics of species that allow them to live successfully in their environment. |
| What is a niche? | An organism's particular role in an ecosystem or how it makes its living. |
| What is competition? | The struggle between organisms for the limited resources in a habitat. |
| What is predation? | An interaction in which one organismckills and eats another. |
| What is a predator? | The organism that does the killing in predation. |
| What is a prey? | An organism that is killed in predation. |
| What is symbiosis? | A close relationship between species that benefits at least one of the species. |
| What is mutualism? | A relationship between 2 species in which both species benefit. |
| What is commensalism? | A relationship between 2 species in which 1 species benefits and the other in neither helped nor harmed. |
| What is parasitism? | A relationship in which one organism lives on or inside another and harms it. |
| What is a parasite? | The organism that benefits by living on or in a host in parasitism. |
| What is a host? | The organism that a parasite lives in or on in parasitism. |
| Explain how water and sunlight are 2 abiotic factors that are important to all organisms. | All living thing require water and in places without sulight, plants cannot clothes. |
| List the terms in order from smallest to the largest: population, orgaism, ecosystem, and community. | Organism, population, community, ecosystem. |
| List 4 ways or determining population size. | Direct observation, indirect observation, sampling, mark-and-recapture studies. |
| A prairie dog, a hawk, and a badger are all part of the same, what? | Community |
| List some limiting factors for populations. | Food, space, weather. |
| What type of interaction do both species benefit? | Mutualism. |