The USDA sets the standards of the food pyramid and has edited it a few times since its inception. The best place for you to learn about the food pyramid would be at the USDA web site.
make a pyramid out of food
This is the food pyramid for vegetarians
The best place to look would be the Mediterranean.
The very best for a COMPLETE system would be a rain forest.
a food pyramid is like a food chain but in a shape of a pyramid
cause.
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A food chain is more relative. A food pyramid is more empirical. The food pyramid is more useful in determining food groups and needs.
old pyramid has more granis
I think that depends on the food in the pyramid
food chains