1.
Organisms fight for limited resources
2.
Organisms work together
3.
Starts with no soil (bare rock)
5.
First living things to grow in a new area.
6.
Depends on available resources.
7.
Controls how big a population is or can grow.
8.
The variety of things in a ecosytsem
9.
Ecosystems that have been around for a long time.
10.
Is a group of the same species living in one area.
11.
Organisms moving into a ecosystem.
12.
Organisms moving out of an ecosystem.
