There are organisms at each level as you move up an energy pyramid. Only energy is available to the next level in a food chain.

A food web is more than a food chain.

As scientists have investigated evolution from a variety of fields, they have found that some of darwin's orginal ideas were inaccurate or incomplete. t explanation provided by evolution was updated each time to reflect the new information they found. what does this suggest about the theory of evolution? it has become a stronger and clearer theory as new information is collected.