Ecology Review

Front

What are the levels of biological organization from least complex to most complex?

Back

Organism, Population, Community, Ecosystem, Biome, Biosphere

Front

What is the term for a relationship between species where one benefits and the other is neither helped nor harmed?

Back

Commensalism

Front

What is a community in ecological terms?

Back

A community is made up of all the populations in a given area.

Front

What type of symbiotic relationship is exemplified by a bird building a nest in a tree?

Back

Commensalism

Front

If a country has an average of 4.5 births for every 3.3 deaths, what can be inferred about its population trend?

Back

The population is most likely increasing.

Tags

NGSS.MS-LS2-4

Front

Define 'ecosystem' in ecological terms.

Back

An ecosystem is a community of living organisms interacting with their physical environment.

Front

What is the difference between biotic and abiotic factors?

Back

Biotic factors are living components of an ecosystem, while abiotic factors are non-living physical and chemical elements.

Front

What is a biome?

Back

A biome is a large geographical biotic unit, a major community of plants and animals with similar life forms and environmental conditions.

Front

What is the biosphere?

Back

The biosphere is the global sum of all ecosystems, where life exists on Earth.

Front

What is population density?

Back

Population density is the number of individuals of a species per unit area.