Lecture 13 BIO120

Ecology is the science of __________.

How organisms interact with each other and their environment.

The word ‘ecology’ comes from the Greek word __________, meaning home or place to live.

oikos

Ecology is the science of the distribution and __________ of species.

abundance

Interactions between organisms and their environment give rise to __________.

natural selection

Nothing in evolution makes sense except in the light of __________.

ecology

An ecological __________ is all the species living together in one place at one time.

community

A __________ is all the individuals of the same species in one place at one time.

population

Many species (over __________%) are still unknown to science.

85

Globally, one estimate suggests there are about __________ million eukaryotic species.

8.7

The sixth extinction is primarily a result of __________ activities.

human

Factors that limit a species’ range include __________, climatic conditions, and food resources.

dispersal

Malthus argued that the size of a population cannot grow faster than the __________ that support it.

resources