Natural Selection and Darwin's Principles

Front

Natural selection definition

Back

Organisms better adapted to the environment survive and reproduce

Front

Charles Darwin’s main discovery

Back

Species change over time through natural selection

Front

Adaptation meaning

Back

a change that increases an organism’s chance of survival

Front

Example of environmental factor

Back

habitat gets hotter temperatures, the organisms begin to develop thinner fur

Front

Genetic variation definition

Back

Differences in DNA among individuals in a population

Front

Survival of the fittest

Back

Those individuals best suited to the environment survive and reproduce

Front

Darwin’s study location

Back

Galapagos Islands

Front

Example of adaptation

Back

Camoflauge is an adaptation that allows an organism to blend in with it's environment. This makes the organism harder for predators to see.

Front

Darwin, when comparing beak shapes in finches

Back

Darwin saw that the beak shapes differed in the different environments because they helped finches eat different foods. The beaks had developed into the shape that was best suited to the particular food source available. Darwin saw this.

Front

Role of food intake in survival

Back

food helps organisms grow and reproduce