Asubset of the population that should represent the entire group, is known as a:

Explain how paleontologists use trilobite fossils as index fossils for various geologic time periods.

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.

Why do the circulatory systems of land vertebrates have separate circuits to the lungs and to the rest of the body?