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MMS Evolution

QuestionAnswer
evolution how species have changed over time - new species have descended from earlier species but have changed over long periods of time
natural selection when species with certain traits are better able to survive and pass on their genes (have babies) because they are better adapted for survival (often called survival of the fittest)
adaptation A trait that is inherited and increases an organisms change of survival (these can come from random mutations)
endangered species a species that is in danger of becoming extinct because of decreasing population
extinct when the last organism of a species dies off
fossil part of an organism or an impression of an organism that lived in the past
Darwin made observations about how species change and came up with the idea of natural selection
Lamarck made observations about how species change and proposed the idea that animals can change over time by using their bodies differently (like giraffes stretching out their necks)
variation any change in organisms of the same species (Example: cats with stripes and cats with spots)
Created by: cvanwyk