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Mrs. Krantz · Web viewBiogeochemical Cycles How does the law of conservation of matter apply to...
Transcript of Mrs. Krantz · Web viewBiogeochemical Cycles How does the law of conservation of matter apply to...
Name: _______________________Period: _______________________
Date: _______________________Biogeochemical Cycles
How does the law of conservation of matter apply to the behavior of nutrients in the environment?(page 83)
Nutrients cycle endlessly in ________________________________ cycles.
Nothing is created or destroyed, matter is just ________________________ from one type to another
The amount of matter in the environment stays the _________________________.
What is the difference between micronutrients and macronutrients?(page 83)
Micro- means _____________________ Micronutrients, like
______________________________________, are needed in small amounts.
Macro- means ____________________ Macronutrients, like
__________________________________________, are need in large amounts.
What is the difference between a producer and a consumer? (pages 141-143)
Primary __________________ produce their own food via photosynthesis
o Plants, algae, phytoplankton (phyto- = plant) _________________ are organisms that must eat (consume) other
organisms (plant or animal) to obtain nutrientso Mostly animals
___________________ are organisms that break down wastes and dead organisms
o Bacteria and fungi
How does the ten percent rule apply to the concept of an energy pyramid? (pages 144-145)
An energy __________________ shows organisms at lower trophic levels exist in far greater numbers, with greater biomass, than organisms at higher trophic levels.
Each trophic level contains just 10% of the energy of the trophic level below it.
o The rest is used to power life processes or lost as heat.What is a food chain and how
Food _______________- The sequence of consumption from producers through tertiary
Name: _______________________Period: _______________________
Date: _______________________does this compare to a food web? (page 146-147)
consumers.
Food _______________- A more realistic type of food chain that takes into account the complexity of nature.
What is the carbon cycle?(page 84-85)
Define/List an example to explain the following terms: Photosynthesis:
________________________________________________________________________________________
Name: _______________________Period: _______________________
Date: ___________________________________________________________________
Cellular respiration: ____________________________________________________________________________________________________________________________________
Fossil fuel: ___________________________________ Combustion:
________________________________________________________________________________________
Decomposition: ________________________________________________________________________________________
Draw the Carbon cycle:
What is the difference between a carbon sink and carbon source?(page 84-85)
Carbon Sink Carbon SourceDefinition
Examples
How do humans effect the carbon cycle?
Deforestation: ____________________________________________________________________________________________________________________________________
Name: _______________________Period: _______________________
Date: _______________________(page 85)
Combustion of fossil fuels: ____________________________________________________________________________________________________________________________________
What is the phosphorus cycle?(page 86 and 354)
Define/List an example to explain the following terms: Weathering:
________________________________________________________________________________________
Uptake: ________________________________________________________________________________________
Fertilizer: ________________________________________________________________________________________
Eutrophication: ________________________________________________________________________________________
Draw the phosphorus cycle:
What causes eutrophication?(page 86 and 436)
1. Runoff of _______________________________ high in ________________________ or ___________________________
2. This causes too much ____________________ to grow
3. Sunlight is blocked and submerged aquatic vegetation
Name: _______________________Period: _______________________
Date: _______________________begins to die.
4. The population of ________________________ grows due to the large amount of organic matter that needs to be decomposed.
5. Bacteria respire as they are decomposing the “dead stuff” and they use up all of the ___________________ (this is called HYPOXIA)
What is the nitrogen cycle?(page 87, 88, 89)
Define/List an example to explain the following terms: Nitrogen fixation:
________________________________________________________________________________________
Bacteria: ____________________________________ Legumes: ___________________________________ Nitrification:
________________________________________________________________________________________
Denitrification: ________________________________________________________________________________________
Draw the nitrogen cycle:
What sources of nitrogen added to the Mississippi River can be regulated in order to help alleviate
Read page 63 and describe what the “dead zone” of the Gulf of Mexico is referring to: ____________________________________________________________________________________________________________________________________________________________________________________________________
What causes the “dead zone” to appear?
Name: _______________________Period: _______________________
Date: _______________________the issues associated to hypoxia in the Gulf of Mexico?(page 63 and 88)
___________________________________________________________________________________________________________________________________________________
Now look at Figure 25 on page 88. List all the nitrogen inputs going into the Mississippi River. Circle the sources that humans can regulate.