1
Group of single-celled or multi-celled individuals individuals of a species in a given area.
2
All populations of all species in a specified area.
3
A community interacting with its physical environment through the transfer of energy and materials.
4
The sum of all ecosystems.
5
Atoms joined in chemical bond.
6
Organized array of cells.
7
Structural unit of interacting tissues.
8
Fundamental units of all substances.
9
The smallest unit of life