What could happen if certain fish species disappear from some areas?
What could happen if certain fish species disappear from some areas?

What could happen if certain fish species disappear from some areas?
How can we maintain fish stocks at a level where breeding continues?
Why are fish stocks in the oceans declining?
How do conflicts and the cost of agricultural inputs affect food and water availability, and what sustainable methods can address these challenges?
What role do new pests, pathogens, and environmental changes play in threatening food security?
How do changing diets in developed countries affect food resources and their global distribution?
How does the increasing birth rate impact food security in some countries?
What is food security, and what biological factors can threaten it?
How does the loss of biomass at each trophic level affect the number of organisms in a food chain or ecosystem?