Question

Think of this example of an ecosystem: A large tree with grasshoppers, caterpillars and other animals eating the leaves, birds eating the leaf eaters, snakes eating birds and a hawk eating snakes. An energy pyramid that counts the number of organisms at each trophic level would look kind of funny. It would only have ONE plant, the tree, at its base.
How could you redesign this Energy Pyramid so that it would make sense ecologically? need help with this please.