Ecology
Dictionary Definition -
the study of the relationships between living organisms and their environment
Dictionary Definition -
the study of the relationships between living organisms and their environment
Symbiosis - Survival
Survival of one species might depend on another

Symbiosis
- Individuals of two species may have a close relationship called symbiosis. There are 3 kinds.

Mutualism
- Mutualism occurs when both species in the symbiosis benefit from the interaction.

Commensalism
- Commensalism occurs if one species benefits while the other is unharmed and unaffected.

Parasitism
- Parasitism occurs when one species is harmed while the other benefits.

Symbiosis
- The table shows how the three symbiotic relationships can be beneficial (+), neutral (0), or harmful (-).