Podcast
Questions and Answers
What percentage of Earth's water is available for drinking and irrigation?
What percentage of Earth's water is available for drinking and irrigation?
2.5%
Most of the productivity of the ocean occurs in or on the _____________.
Most of the productivity of the ocean occurs in or on the _____________.
uppermost layer of the ocean called the photic zone
What is our primary consumptive use of water?
What is our primary consumptive use of water?
irrigation
What is the direct cause of death for aquatic animals during eutrophication?
What is the direct cause of death for aquatic animals during eutrophication?
Which of the following fishing methods would be most appropriate if a fisherman wants to catch benthic fish?
Which of the following fishing methods would be most appropriate if a fisherman wants to catch benthic fish?
About how long have wastewater treatment plants been in existence?
About how long have wastewater treatment plants been in existence?
Which diseases have been all but eliminated from the United States due to wastewater treatment plants?
Which diseases have been all but eliminated from the United States due to wastewater treatment plants?
If you accidentally flush your cell phone, where will it most likely be found at a wastewater treatment facility?
If you accidentally flush your cell phone, where will it most likely be found at a wastewater treatment facility?
Where does settling of solids occur at a wastewater treatment facility?
Where does settling of solids occur at a wastewater treatment facility?
What does the Kanapaha Wastewater Treatment Facility use to disinfect the treated water?
What does the Kanapaha Wastewater Treatment Facility use to disinfect the treated water?
Which of the following products of a wastewater treatment facility is often put on farm fields as a fertilizer?
Which of the following products of a wastewater treatment facility is often put on farm fields as a fertilizer?
Ocean currents can affect climate. One major downwelling responsible for keeping Europe warmer than it would otherwise be is known as ___.
Ocean currents can affect climate. One major downwelling responsible for keeping Europe warmer than it would otherwise be is known as ___.
What is North Atlantic Deep Water?
What is North Atlantic Deep Water?
What type of farming has led to the destruction of mangroves?
What type of farming has led to the destruction of mangroves?
How would you describe Maria's water use if she does not return the water to the environment without treatment?
How would you describe Maria's water use if she does not return the water to the environment without treatment?
If oil accumulates in a body of water slowly due to leaks from boats and runoff from land, where is this oil pollution from?
If oil accumulates in a body of water slowly due to leaks from boats and runoff from land, where is this oil pollution from?
Marine reserves tend to increase species diversity.
Marine reserves tend to increase species diversity.
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Study Notes
Water Availability and Use
- Only 2.5% of Earth's water is suitable for drinking and irrigation.
- Irrigation is the primary consumptive use of water, accounting for 70% of annual fresh water utilized in agriculture.
Ocean Productivity
- Most ocean productivity occurs in the photic zone, the uppermost layer of the ocean where sunlight penetrates.
Eutrophication Effects
- Eutrophication leads to algal blooms due to excess nutrients, causing a loss of dissolved oxygen and anoxic conditions, which result in the death of aquatic animals.
Fishing Methods
- Bottom-trawling is an effective method for catching benthic fish, using weighted nets dragged across the seafloor.
Wastewater Treatment Facilities
- Wastewater treatment plants have been operational for approximately 120 years, dating back to the late 1800s.
- Cholera has been nearly eliminated in the U.S. due to advancements in wastewater treatment.
- Bar screens in treatment facilities are designed to remove large items like cell phones from incoming wastewater.
- Settling of solids in treatment plants occurs in clarifiers.
- Chlorine is used for disinfecting treated water at the Kanapaha Wastewater Treatment Facility.
- Biosolids, a product of wastewater treatment, are often repurposed as fertilizer for farm fields.
Ocean Currents and Climate
- The North Atlantic Deep Water is crucial for thermohaline circulation, transporting warmer surface water from the Gulf to the Atlantic, affecting European climate.
Environmental Impact of Farming
- Shrimp farming has contributed to the destruction of mangrove habitats.
Water Use Classification
- Consumptive water use describes actions like showering, drinking, and washing, which generally return no untreated water to the environment.
Pollution Sources
- Oil accumulation in water due to leakage and runoff is categorized as non-point source pollution.
Marine Reserves
- Marine reserves can enhance species diversity, showing a documented increase of 23% within 1-2 years post-establishment.
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