Ecology Review

symbiotic relationship in which both organisms benefit

• competition
• Mutualism
• nitrogen fixation
• energy pyramid

A living relationship between two species in which one organism is harmed is called...

• mutualism
• commensalism
• parasitism
• niche

What does a food web represent?

• All connections of energy flow throughout all organisms in a habitat.
• The specific ways that mutualism is carried out.
• A single pathway or energy flow between organisms. 
• How carnivores get their food. 

An illustration that uses arrows to show the many possible directions in which matter and energy can pass through the organisms in an ecosystem.

• Food chain
• Food web
• Energy Pyramid
• Succession Map

The nonliving aspects of an ecosystem.

• Abiotic factors
• Biotic factors

The living portions of the ecosystem.

• Biotic factors
• Abiotic factors

A collection of organisms that make up a community as well as all of the nonliving aspects of the environment.

• Population
• Community
• Habitat
• Ecosystem

Different populations living and interacting with each other in the same area

• Biome
• Ecosystem
• Community
• Niche

Two or more members of a particular species living and interacting in the same area

• Community
• Population
• Organisms
• Biosphere

An individual belonging to a specific species

• Biotic
• Community
• Organism
• Reptile