BIO.B.4 Ecology
Topic Summary for Levels of Ecological Organization:
Ecology is the scientific study of interactions among organisms and between organisms and their environment.
Earth’s organisms live in the biosphere. The biosphere consists of the parts of the planet in which all life exists.
Ecologists may study different levels of ecological organization:
• Individual organism
• An assemblage of individuals that belong to the same species and live in the same area is called a population.
• An assemblage of different populations that live together in an area is referred to as a community.
• An ecosystem includes all the organisms that live in a particular place, together with their physical environment.
• A group of ecosystems that have similar climates and organisms is called a biome.
Ecosystems include biotic and abiotic factors.
A biotic factor is any living part of an environment.
An abiotic factor is any nonliving part of an environment.
Topic Summary for Levels of Ecological Organization:
Ecology is the scientific study of interactions among organisms and between organisms and their environment.
Earth’s organisms live in the biosphere. The biosphere consists of the parts of the planet in which all life exists.
Ecologists may study different levels of ecological organization:
• Individual organism
• An assemblage of individuals that belong to the same species and live in the same area is called a population.
• An assemblage of different populations that live together in an area is referred to as a community.
• An ecosystem includes all the organisms that live in a particular place, together with their physical environment.
• A group of ecosystems that have similar climates and organisms is called a biome.
Ecosystems include biotic and abiotic factors.
A biotic factor is any living part of an environment.
An abiotic factor is any nonliving part of an environment.