Question of the Day: Efficiency of Food Production part of Question of the Day
The figure below shows a simple food chain for land production. How much solar energy does a vegetarian utilize when eating 1,000 calories of plant material? Use the information from the figure to calculate this. ...

Question of the Day: Regeneration of Fish part of Question of the Day
The two figures shown above are from the The Fishing Game (more info) game. They show the number of new fish per year that are added to the fish "stock," depending on the maximum number of fish that the ...