Chapter 1

A __________________ is a group of organisms of one species living in the same environment.

In the _________________, liquid water is changed to water vapor by the process of _______________.

Water that falls as_____________seeps through the soil to become ____________.

An environment is made up of ___________, or living parts, and _________________, or nonliving parts.

The role of an organism in an ecosystem is its__________,while the place where an organism lives is its________________.

All the population living in the same environment at the same time make up a :

Carbon dioxide, oxygen, nitrogen, and water are called _____________because they are cycled through Earth's ecosystems.

The surrounding in which an organism lives are called its:

Communities and their abiotic surroundings make up an:

The __________________is made up of the paths taken by carbon dioxide and oxygen through Earth's ecosystems.

In the ________________, nitrogen gas is changed into a form that plants can use.

Resources that can be replaced within a human lifespan are______________. Those that cannot are __________.