Unit 7 Organisms and their Environments Crossword

______ are fungus and algae; breaks down rock to form soil
non-living
Living
variety of organisms in an ecosystem or biome
dominant community of plants and animals that come to live in an area
group of organisms of the same kind that can mate and produce offspring like themselves
ability to maintain ecological processes over long periods of time; ability of an ecosystem to maintain its structure and function over time
large region with plants and animals well adapted to the soil and climate of the region
a process started by an event that reduces an already established ecosystem to a smaller population of species
the dependence of every organism on its connections with other parts of its environment, both living and nonliving
process of one ecological community gradually changing into another
a condition or resource that keeps a population at a certain size
the unique role or job of an organism in an ecosystem
first organisms to live in an area; lichens/mosses
process that develops a biotic community in a previously uninhabited and barren habitat with little or no soil