DOC PREVIEW
CSU FW 104 - Biochemical Cycles

This preview shows page 1 out of 3 pages.

Save
View full document
View full document
Premium Document
Do you want full access? Go Premium and unlock all 3 pages.
Access to all documents
Download any document
Ad free experience
Premium Document
Do you want full access? Go Premium and unlock all 3 pages.
Access to all documents
Download any document
Ad free experience

Unformatted text preview:

FW 104 1nd Edition Lecture 6 Outline of Last Lecture I. CommunityA. Species Interactions in the Community1. Predation & Prey2. Parasitism3. Mutualism4. Commensalism5. CompetitionB. EcosystemC. Food ChainsD. Food WebsE. EnergyOutline of Current Lecture I. Biochemical Cycles1. Carbon Cycle2. Nitrogen Cycle3. Water Cycle4. Phosphorous Cycle 5. Sulfur Cycle6. Green House Effect II. Scientific MethodsIII. Theories and LawsCurrent LectureI. . Biochemical Cycles: cycling from nonliving environment to living organisms and back again.These notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute.1. Carbon Cycle: - carbon dioxide in and out- cellular respiration (CO2 wastes)- photosynthesis (CO2 used >>> sugars)- Energy- Primary producers and consumers - Human impact and interactions2. Nitrogen Cycle: - most Nitrogen is fixed by bacteria- limiting factor- taken up by the soil through - lightning and cosmic radiation can also fix nitrogen- natural and necessary cycles... except when in excess-burning fossil fuels = nitric acid which can get into the rain and cause acid rain- human impacts which is our excess wastes like fertilizers, sewage, feedlots, ... runoff. -Algal blooms from run off: plants grow (eutrophication) then decompose = deplete oxygen for aquatic animals3. Water Cycle- Living organisms- limiting factor- Evaporation: heat breaks bonds in atmosphere- Condensation: cools, Hydrogen bonds reform- precipitation- transpiration- major nutrient transports mechanism through the air, atmosphere, water, underground- human impacts: excess nutrients, pollution, water withdrawal ..., landscape modifications which interrupts cycle, climate change. 4. Phosphorous Cycle: occurs on very localized scale, often limiting, does not occur in the atmosphere, backbone to DNA (teeth, tissue, bones, etc), leached out through erosion. - human impacts: mine if for fertilizers and detergents, runoff >>> algal booms 5. Sulfur Cycle:- much tied up in underground sulfide rocks- volcanic action - gas pools (Yellowstone)- mining - acid rain- Human impacts: 99% of sulfur dioxide from human sources is burningoil & coal, sulfur dioxide can react with oxygen which produces sulfuric acid 6. Green House EffectII. Scientific Method: best approach we have to finding/exploring/proving general truths - Science: knowledge covering general truths or operation of general laws especially as obtained & tested through scientific method- Observation or Question (interested that makes a person want to understand or need an answer of why?)  Hypothesis (answer to the question, keywords restate question & “because”)  Prediction(s) Test- Inductive: broad generalizations based on observations – form hypothesis - Ductive based on testing hypothesis- Often hypotheses that support personal values are accepted without supporting evidence, additional testing or without alternative hypothesis being considered.III. Theories and Laws - prove or disprove, repeated testing, different


View Full Document
Download Biochemical Cycles
Our administrator received your request to download this document. We will send you the file to your email shortly.
Loading Unlocking...
Login

Join to view Biochemical Cycles and access 3M+ class-specific study document.

or
We will never post anything without your permission.
Don't have an account?
Sign Up

Join to view Biochemical Cycles 2 2 and access 3M+ class-specific study document.

or

By creating an account you agree to our Privacy Policy and Terms Of Use

Already a member?