The first species in an area undergoing primary or secondary succession.

_________________________ is a method to trace evolutionary history by using shared traits derived from a common ancestor to determine relationships. _______

Egrets perch on the backs of cattle while they graze.  The birds eat insects that the cows stir up, while the cows are neither harmed not helped. What term describes this relationship?

When two groups evolve in different directions as they adapt to different environments, and eventually they do not reproduce with each other, so they are considered different species, we call this _____ evolution.

_____________  _____________ is the highest potential rate of increase for a population when resources are unlimited. _______ _______

After the Industrial Revolution, the light-colored peppered moths became _____ in the population.

Rose thorns are an example of ____________________ defense mechanism.

_________  __________  __________ are homologies shared  by only certain species the study group. _______ _______ _______

More frequently, resources are not unlimited and the _____________  _____________ is the total number of individuals that the resources can support. _______ _______

Which evidence for evolution uses plants and animals trapped in rock strata?