Adapting to the Environment Adaptation a genetic trait

Adapting to the Environment

Adaptation- a genetic trait that improves an organism’s chance of surviving and reproducing • • Natural Selection- a processes that favours the survival of some individuals who are better adapted to their environment and eliminates individuals that are poorly adapted to their environment

Examples of Adaptation Include: Being Faster Being Stronger

Examples of Adaptation Include: Camouflage Chemical Defenses

Examples of Adaptation Include: Mimicry

Coevolution When organisms evolve together adapting to one another Ex. Hummingbirds and flowers

Biodiversity O The variety of organisms in the biosphere O Closely linked to primary productivity O A measure of available energy provided by producers O The higher the primary productivity(more producers) the higher the biodiversity(more organisms)

Extinction: when all the individuals of a species are gone from the earth Extirpation: local extinction of a species in one particular area

Keystone Species o Species whose presence plays an important role in an ecosystem determining the number and types of other species in the community o Ex. On the west coast sea otters are keystone species

Homologous traits Homology is shared ancestry between a pair of structures. Homologous structures are a result of descent with modification. This means that the three animals shown to the right share a common ancestor

ARE THERE ANY HOMOLOGOUS TRAITS?

ARE THERE ANY HOMOLOGOUS TRAITS?