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Transcript
Name: _________________________________________________ Date: _______________ Period: ________ Biology Notes: Ecology Directions: Fill in the blanks as we cover the topic in the PowerPoint. What is Ecology? • Defined: Studying how ____________ __________________ within the __________________________ is called Ecology • All life interacts ______________________ the biosphere – Area within the deepest ____________________ trenches to the highest _______________________________________ Populations • Defined: _______________________ of __________ species living in the ____________________ area • Population _____________________________based on: – Births, _____________________, Immigration,_____________________, available _________________________________________ • List some examples of populations within species: – ________________________________ – ________________________________ – ________________________________ – ________________________________ – ________________________________ – ________________________________ Population Patterns • Populations go through 3 stages: 1) _______________________________ growth • Population is slowly adapting to particular environment 2) _______________________________ growth • High birth rates due to abundant resources 3) _____________________ _____________________________ • Defined: ___________________________ number of _____________________________ that the environment can ________________________________________ • • Birth & death rates eventually _______________________________ What stage is the human population in? ____________________________________________________ Communities • Defined: ______________________________ of _____________________species living in the ___________________area at the same ________________________ • Each organism has its own______________________________ – • Habitat: ___________________ where an organism ______________________________ Each species has its own ______________________________ – Niche: The _________________________________________ of a species – Ex: Termites return nutrients to the soil Ecosystems • Defined: ___________________________ of species__________________________ with the living & non‐living • Biotic (_________________) Factors: • o Animals: _____________________, ____________________, __________________ o Plants: _____________________, ____________________, __________________ Abiotic (______________________) Factors: o • Sand, __________________, sunlight, _____________, soil, ____________________, etc… Ecosystem _____________________ affect _______________________________ o Keystone species __________________ ______________ ecosystems • Ex: What is a Biome? • Defined: ____________________ area with distinct _____________________, plant, and animal life • Climate factors: __________, rain, ___________________________ • Climate ______________________________ life The biosphere • Defined: ___________________organisms and the part of the ________________ where______________exists • Biosphere ___________________ can __________________ life • Ex: More _____________in the atmosphere… causes _____________________ temps…this can affect many different species Review 1. What is ecology?_________________________________________________________________________________ 2. What are two reasons that populations will increase?__________________________ , ________________________ 3. What are two reasons that populations will decrease?_________________________ , ________________________ 4. What are factors that control population growth called? ________________________________________________ 5. How does a population, community, ecosystem, biome, and biosphere differ? _______________________________ _______________________________________________________________________________________________ 6. What is a keystone species? ________________________________________________________________________ 7. Place the levels of ecology in order from smallest to largest: Ecosystem, Population, Biosphere, Community, Biome __________________ > ____________________ > ___________________ > ________________ > _____________