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Chemistry
Definition
Management
Impacts
Recovery
100
Hypoxia occurs when the concentration of what dissolved element falls below 2mL/L water?
What is oxygen.
100
Inputs of natural or artificial substances like nitrates and phosphates through fertilizers or waste into an aquatic system
What is eutrophication?
100
Decrease excess nitrogen inputs into the soil, therefore decreasing soil runoff
What is an agricultural practice that can be reduced to reduce eutrophication.
100
An area where massive deaths in marine life occur is called a
What is a Dead Zone
100
This state is reached when key species are lost and the prior ecosystem collapses.
What is a degraded state.
200
Describe the process of nitrification. Include in your description 2 major compounds involved and one organism that can perform nitrification.
N2 + 8H+ + 8e- = 2NH3 + H2 rhizobium bacteria or cyanobacteria
200
agricultural runoff
What human induced activity can increase the availability of organic and inorganic nutrients into ecosystems?
200
Haber Basch Process
What is the process that introduced the synthetic fertilizer?
200
This occurs when dissolved oxygen levels falls too low
What is Hypoxia
200
A reduction in this factor can lead to improved dissolved oxygen levels. (Name 1 of the 3 factors)
What are nurient loadings, stratification strength, or freshwater runoff
300
Name at least 2 phosphorus containing compounds that plants need in order to survive.
What is ATP/ADP and DNA.
300
Organic farming
What is a potential agricultural change that can decrease harmful nitrate leaching?
300
Positive: helped provide food from crops leading to population explosion Negative: Increased war by 2-3 years, Increase excess nitrogen into water environments causing eutrophication
Cost and benefit of creation synthetic fertilizer process?
300
This microorganism grows rapidly when Eutrophication occurs
What is phytoplankton
300
Introducing mussels to an ecosystem can improve water quality, but the decomposition of mussel excretions can deplete oxygen levels. This unstable management practice is an example of what?
What is a partial recovery.