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You eat at the lowest trophic level, which would be grains and grasses. As you progress up the food chain, energy isn't lost but transferred into another form, heat.

Remember the first law of Thermodynamics? The first law of thermodynamics states that Energy is Conserved and that under normal conditions is neither created nor destroyed, but transferred or transformed.

When you eat low on the trophic level (Lowest-highest.....1. grains and grasses ( Primary producers), 2. Herbivores (animals that eat plants, Primary consumers) 3. Omnivores (eat plants and animals, secondary consumers) and 4. Carnivores (eat animals, tertiary or TOP consumers). Humans are carnivores.

Second law of thermodynamics states that the ecosystems are not 100% efficient and with each successive energy transformation as grain is passed to the herbivores, energy is transformed into heat and escapes the herbivores, so when the omnivores eat the herbivores there is less energy stored inside the herbivores and so on all the way to the top of the trophic level, less energy is available to do work because each transfer or transformation leaves less energy behind, even though it is not lost.

The second law of thermodynamics states that we could feed more people if we consumed grain rather than feeding it to livestock, then eating the livestock.

If you would like to eat so that you would be consuming the most amount of energy per meal, you eat primary producers. Eating low on the trophic level is not just a good way to eat where energy is most plentiful in our food but it is also good for nature, the earth and a variety of other reasons.

I wish you the best of luck if you plan to become a vegetarian, it is a very healthy lifestyle, but you do need to be educated so that you are getting the proper amount of nutrients and protein, which are in abundant quantities in grains and grasses ( I don't mean grass as the kind on your lawn either) Look up what types of foods are considered grasses, you'd be surprised.

****Also, Do Not Forget that there IS NO loss of energy as you move higher up the food chain, only a transformation of energy, which means that there is less energy available to do work. Just like the laws of matter, so too is the 1st law of thermodynamics. Both laws state that under normal conditions matter or energy cannot be created or destroyed, but can be transformed or transferred.

These are fundamental rules of science so that is why I am really stressing the point of energy not being lost.

If you have any questions, please feel free to ask me.

Kathy

(Microbiologist, 10 yrs)

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Q: How can you cut down energy loss in a food chain?
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