Podcast
Questions and Answers
What are the primary sources of phosphate-containing ocean sediments?
What are the primary sources of phosphate-containing ocean sediments?
- Bodies of ocean organisms and their excretions (correct)
- Volcanic ash and aerosols
- Fertilizer runoff and sewage
- Mineral dust and volcanic ash
How can excess phosphorus and nitrogen impact aquatic ecosystems?
How can excess phosphorus and nitrogen impact aquatic ecosystems?
- Promote the survival of fish
- Enhance growth of shellfish
- Increase dissolved oxygen levels
- Lead to excessive algae growth and depletion of dissolved oxygen (correct)
What is the main source of atmospheric sulfur dioxide?
What is the main source of atmospheric sulfur dioxide?
- Rock weathering
- Direct fallout from the atmosphere
- Volcanic activity and geothermal vents
- Burning of fossil fuels by humans (correct)
In the sulfur cycle, where is sulfur found in the form of sulfur dioxide?
In the sulfur cycle, where is sulfur found in the form of sulfur dioxide?
What process contributes to the death of aquatic organisms like shellfish and fish due to excess nitrogen?
What process contributes to the death of aquatic organisms like shellfish and fish due to excess nitrogen?
How does phosphorus play a role in living processes?
How does phosphorus play a role in living processes?
What is a primary way human activity can alter the nitrogen cycle?
What is a primary way human activity can alter the nitrogen cycle?
Which of the following is a potential effect of atmospheric nitrogen on Earth's ecosystems?
Which of the following is a potential effect of atmospheric nitrogen on Earth's ecosystems?
What is a major consequence of phosphate runoff from fertilizers in aquatic ecosystems?
What is a major consequence of phosphate runoff from fertilizers in aquatic ecosystems?
How does phosphorus contribute to the structure of living organisms?
How does phosphorus contribute to the structure of living organisms?
Which process is associated with the overgrowth of algae, depletion of oxygen, and death of aquatic fauna due to nutrient runoff?
Which process is associated with the overgrowth of algae, depletion of oxygen, and death of aquatic fauna due to nutrient runoff?
What is a significant source of phosphate runoff into rivers, lakes, and oceans?
What is a significant source of phosphate runoff into rivers, lakes, and oceans?
What is the primary source of energy entering ecosystems?
What is the primary source of energy entering ecosystems?
Which element is a key component of nucleic acids and proteins?
Which element is a key component of nucleic acids and proteins?
What process is responsible for the leaching of sulfur and phosphorus into water bodies?
What process is responsible for the leaching of sulfur and phosphorus into water bodies?
Which element is critical to the three-dimensional shape of proteins?
Which element is critical to the three-dimensional shape of proteins?
In living processes, what is phosphorus primarily used to make?
In living processes, what is phosphorus primarily used to make?
What is the main role of nitrogen in organisms?
What is the main role of nitrogen in organisms?
