In the early atmosphere, it is believed that there was little to no _____ on Earth.

All of the following are kingdoms of eukaryotes EXCEPT

In our modern classification system, how many kingdoms of life are there?

Ecosystems are exposed to changes in the environment which can effect the composition of the ecosystem. These changes are called _____.

The ability of an ecosystem to remain at equilibrium in spite of disturbances is called ____.

The speed at which an ecosystem recovers equilibrium after being disturbed is called ____.

The rarest type of ecosystem, occurring on only 1.8% of the Earth's surface, is ____.

The theory of _____ helps to explain how populations can evolve to become better suited to their environments within their ecosystem.

_____ is the study of the changes in ecosystem structure caused by changes in the environment (disturbances) or by internal forces.

____ is credited with coining the term "Ecology."

_____ published a standardized system of naming organisms called binomial nomenclature.