Here is a PDF file link on grain use versus meat use in the USA and China. Do you think it relates to concepts in the story? www.biofuelsdigest.com/MeatvsFuel.pdf
Science at key stage 3 (Year 9)Unit 9D: Plants for food
Section 9: b. How do pests affect plant growth?
Children should learn:
- that toxins enter a food chain when plants take them in or are in contact with them
- that as animals feed on plants they may accumulate toxins taken in by the plant
- that at each step of the food chain persistent toxins are accumulated in the carnivores and that this process is bio-accumulation
- about advantages and disadvantages of using pesticides"
Source: http://www.standards.dfes.gov.uk/schemes2/secondary_science/sci09d/09dq5b?view=get. Accessed 15 August 2010
Ensuring sufficient food supplies is one of the most basic challenges facing any human society. Organized and efficient food production supports population growth and the development of cities and towns, trade, and other essential elements of human progress.
Once it is considered that following food pyramid can provide effective diabetes control and blood glucose management. But now food pyramid is considered as outdated method that is only suitable for healthy individual (non diabetic) not for diabetes.
"The concept of biomass is important. It is a general principle that the further removed a trophic level is from its source (detritus or producer), the less biomass it will contain (biomass here would refer to the combined weight of all the organisms in the trophic level). This reduction in biomass occurs for several reasons:
- not everything in the lower levels gets eaten
- not everything that is eaten is digested
- energy is always being lost as heat
"...[R]emember that the decrease in number is best detected in terms or biomass. Numbers of organisms are unreliable in this case because of the great variation in the biomass of individual organisms."
Source: http://www.marietta.edu/~biol/102/ecosystem.html#Pyramids5. Accessed August 15, 2010.
Hmmm! What do you think about that? Is it time to look at journal articles on the food pyramid and biomass?