Podcast
Questions and Answers
Which season do red tides typically occur in the northern hemisphere?
Which season do red tides typically occur in the northern hemisphere?
- April through September (correct)
- January through June
- July through December
- October through March
What is the main cause of ocean eutrophication?
What is the main cause of ocean eutrophication?
- Natural nutrient scarcity
- Decrease in primary productivity
- Artificial enrichment of nutrients (correct)
- Decrease in harmful algal blooms
What is the primary reason for the formation of dead zones?
What is the primary reason for the formation of dead zones?
- Decrease in algal blooms
- Decrease in dissolved oxygen
- Nutrient runoff from rivers (correct)
- Increase in fish population
What happens to the dissolved oxygen concentration in the water during a dead zone?
What happens to the dissolved oxygen concentration in the water during a dead zone?
Which of the following is the second largest dead zone in the world?
Which of the following is the second largest dead zone in the world?
What is the main cause of the dead zone in the Gulf of Mexico?
What is the main cause of the dead zone in the Gulf of Mexico?
Which marine plankton is the most abundant and smallest?
Which marine plankton is the most abundant and smallest?
Which region has the greatest primary productivity in the summer and least in the winter?
Which region has the greatest primary productivity in the summer and least in the winter?
Which months have the highest sunlight in the year?
Which months have the highest sunlight in the year?
What causes a phytoplankton bloom in the spring?
What causes a phytoplankton bloom in the spring?
When do zooplankton populations peak?
When do zooplankton populations peak?
Which ocean region has the highest year-round phytoplankton productivity?
Which ocean region has the highest year-round phytoplankton productivity?
Which ocean current brings nutrient-rich water towards the surface near Antarctica?
Which ocean current brings nutrient-rich water towards the surface near Antarctica?
What is the main reason for decreased productivity in the southern hemisphere?
What is the main reason for decreased productivity in the southern hemisphere?
Why is the productivity in the open ocean in tropical areas fairly low?
Why is the productivity in the open ocean in tropical areas fairly low?
When does the productivity in temperate oceans reach its peak?
When does the productivity in temperate oceans reach its peak?
Which type of organisms in the ocean convert solar energy into chemical energy?
Which type of organisms in the ocean convert solar energy into chemical energy?
What is the term used to describe the dead remains and waste products of organisms in the ocean?
What is the term used to describe the dead remains and waste products of organisms in the ocean?
Which feeding strategy involves taking in seawater and filtering out usable organic matter?
Which feeding strategy involves taking in seawater and filtering out usable organic matter?
What is the primary source of biomass in marine ecosystems?
What is the primary source of biomass in marine ecosystems?
Which organisms are considered herbivores in the food chain?
Which organisms are considered herbivores in the food chain?
What percentage of energy is transferred between each feeding stage?
What percentage of energy is transferred between each feeding stage?
What is the flow efficiency of energy conversion to the primary producers at trophic level number one?
What is the flow efficiency of energy conversion to the primary producers at trophic level number one?
Which organisms are considered top predators in the food chain?
Which organisms are considered top predators in the food chain?
What is the relationship between biomass and trophic level in the biomass pyramid?
What is the relationship between biomass and trophic level in the biomass pyramid?
