A/n ___ consists of all the communities that live in an area and the abiotic features of their environment.

• community
• population
• biome
• ecosystem

A/n ___ is all the populations in an area.

• ecosystem
• population
• community
• biome

All the organisms of one species that live in an area are called the ___.

• population
• ecosystem
• biome
• community

The gradual, predictable change from one community of organisms to another is called ___.

• climax community
• ecological succession
• ecosystem succession
• community

___ succession can take hundreds or even thousands of years to develop into a climax community.

• Climax
• Ecosystem
• Primary
• Secondary

Succession that occurs after a forest fire is an example of ____.

• primary succession
• ecosystem succession
• secondary succession
• no soil

What type of succession begins only when there is no soil?

• climax
• primary
• secondary
• intermediate

A community that tends to remain the same and is in the final stage of succession is a/n

• ecosystem
• pioneer community
• climax community
• bioregion

The more biodiversity present in an ecosystem, the greater its 

• temperature
• biodiversity
• sustainability
• age

What is an example of a pioneer species in primary succession?

• lichens
• mosses
• grasses
• both a and b