Charles Darwin + Extinction Flashcards
What was Darwin’s theory
Organisms evolve as a result of natural selection
What is peer review
The evaluation of a scientist’s work by another scientist
Darwin realised that the …… linked to ….
size and shape type of food available on each island
Fossil record definition
Provides evidence that organisms have changed over time
Extinct definition
When no more individuals of a species remain anywhere in the world
How do organisms become extinct? (5 points)
Changes to organisms environment
Destruction of habitat
Outbreak of new disease
Introduction of new predators
Increased competition for resources
Why do humans make extinction more likely
Humans compete with other organisms for space, food and water
As well as humans making extinction what else is a factor
Climate Change
Definition of biodiversity
A measure of the variety of all the different species of organisms on earth or within a particular ecosystem.
When species go extinct is biodiversity increased or reduced
reduced
Why is biodiversity important to maintain and environment
The greater the variation within a species the more likely some members of population will survive environmental changes
