In the example where a bug contains 5 units of pesticide, a lizard that eats 3 bugs contains 15 units, and an eagle that eats 2 lizards contains 30 units, this pattern demonstrates:
1 )
That toxic substances decrease in concentration as they move up the food chain
That organisms at higher trophic levels consume more prey and accumulate more toxins
3 )
That pesticides are only harmful to birds and not to other animals
4 )
That toxic substances are evenly distributed among all organisms in a food chain
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