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- origins & history
- structures
- functions
- interactions between species
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- study the diversity of life
- research diseases
- develop technologies
- improve agriculture
- preserve the environment
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Anything that has or once had all the characteristics of life. |
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The characteristics of life (8) |
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Definition
- made of one or more cells
- display organization
- grow and develop
- reproduce
- respond to stimuli
- requires energy
- maintains homeostasis
- adaptations evolve over time
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Definition
The study of nature and its physical setting. |
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What is the purpose of the scientific inquiry? |
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The development of explanations. |
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- guided by reserach
- challenges accepted theories & results
- debates
- test claims
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How is scientific investigation done? |
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Definition
Through observations & inferences |
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Definition
- Ask a Question
- Form a Hypothesis
- Collect Data
- Analyze Data
- Report Conclusions
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Group used for comparison |
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Group exposed to factor/variable |
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Definition
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What changes because of Independent Variable |
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factor that remains the same |
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The study of relationships among living organisms and the interactions the organisms have with their environment. |
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portion of Earth that supports life |
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an individual body that carries out processes of life |
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Group of organisms of the same species that occupy the same geographic place at the same time. |
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Group of interacting populations that live in the same geographic area at the same time. |
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biological community and all the nonliving factors in it. |
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Definition
Large group of ecosystems that share the same climate and have similar types of communities |
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Factors that Affect the Distribution of Organisms |
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Definition
Species Dispersal-natural migration & introduced species Behavior & Habitat Selection-potential range vs. actual range Biotic & Abiotic Factors- living vs. nonliving Climatic factors-temperature & water Habitat vs. Niche-where it lives vs. what it does
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Term
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Definition
Mutualism- both benefit Commensalism- 1 benefit, 1 stays the same Parasitism- 1 benefit, 1 harmed
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Definition
[[worms]] eat fragments of dead matter and return nutrients to environment to be reused |
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[[fungi]] break down dead organisms by releasing digestive enzymes |
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Definition
food chain: series of steps that show flow of energy between predator and prey food web: many interconnected food chains between a group of organisms |
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The length of a food chain is limited by the inefficiency of energy transfer among the chain |
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Dynamic stability hypothesis |
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Definition
Long food chains are less stable than short chains. |
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Definition
A step in a food chain/web. First trophic level: Producers Second trophic level and up: Consumers |
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Shows the amount of energy or matter in an ecosystem. Energy pyramid Biomass pyramid Number pyramid |
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