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Biology chapter6
Mrs. Hagans study guide for ch. 6 / yr. 2009
| Question | Answer |
|---|---|
| Which erath systems must interact efficiently in order for an ecosystem to maintain itselft? | atmosphere, hydrosphere, geosphere |
| What is mostly the result of life processes of organisms whcih inhabit earth | earths atmosphere |
| What needs to produce enough oxegen for themselves and other organisms on the earth to maintain a balance of atmospheric carbon dioxide and oxygen | plants and photosythetic organisms |
| What is responsible for the ozone layer | oxegen produced through photosythesis |
| What does the ozone layer prevent | the sun's uv radiation from reaching earth's surface and protects biosphere |
| what allows the normal cycling of oxygen and carbon dioxide | cycle btw. plants and animals |
| How is nitrongen maintained in the atmosphere? | through the nitrogen cycle |
| How is water maintained in the atmosphere | the Water cycle |
| How is the air cleaned after a rain or snow fall? | water evaporates ande impurities are released from the atmosphere |
| what is the greenhouse effect | Normal warming effect, gases trap heat inthe atmosphere |
| List the greenhouse gasses and what they do | carbon dioxide, oxygen, methan, water vapor; trap heat and maintain earths temp |
| the amount of carbon dioxide in the atmospher cylces in response to what (2 things)? | the degree to which plangts and other photosythetic organisms cover the earth and absorb Co2 |
| What is a sink? | salt water ocean for Co2; absorbers of Co2; absorbs what plants don't use and turn into salts |
| As part of the gesosphere what are the soils on earth constanly doing | being generated and eroded |
| What are the 4 distinct components of soil | inorganic minerals, organic material, water, and air |
| The process of soil generation continues as weathering of inorganic materials orccurs. what are the 4 types of weathering? | wind, water, ice, decaying of organic materials |
| What are the natural processes that move soil from one location to another due to water, wind, ice and other agents | soil generation, erosion and depletion |
| what allows the process of soil production to be consistent with the prociss of soil erosion so that the overall amount of soil remains constant? | production of plants |
| what allows succesion to take place | soil in the ecosystem |
| The hydrolic cycle is maintained by? | energy of the sun and the effect of weather |
| What are the 3 ways the hydrolic cycle purifies water? | 1. evaporated water 2. seeps dwon through soil and rock purifying 3. heavy particles settle at the bottom of rivers |
| How are waste materials from organisms decomposed | by bacteria and other org. in the soil in aquatic exosystems |
| Describe how nutrients are cycled through the ecosystem | from org. to the environment through geochmical cycles |
| Sustainable | clearing land, habitat destrucition, air pollution, waste disposal problems, nutrient depletion |
| tradgedy of the commons | story of how a few people can destroy something for everyone else |
| any resource that is free to anyone can be... | destroyed |
| renewable resources are or are not unlimited? | not |
| the wearing away of surface soil by water and wind is | soil erosion |
| b/c it takes many centurys to produce old growth forest they are | nonrenewable reasources |
| area in the stratospher where ozone is highly concentrated | ozone layer |
| chemicals in refrigeratrs and air conditions, propellant in spray cans | chlorofluorocarbons (CFC's) |
| what do cfc's do | thins ozone layer leting in uv light and causing cancer, phytoplakton death wich could kill the food chain/ kills crops |
Created by:
SamuelH
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