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B2 Evolution

Evolution, speciation and fossilisation

QuestionAnswer
The theory that states: all the organisms around today have developed from previous life forms. Evolution
The most significant evidence for evolution The fossil records
Remains of hard parts of animals such as bones and shells that do not decay easily can form: Fossil
The animal we have a complete fossil record for. Horse
Why do new species evolve? they are better adapted to survive in their environment
When the numbers of a species become dangerously low the species becomes: Endagered
The woolly mammoth became extinct because: The climate became warmer
An asteroid collision with the Earth could have resulted in the extinction of: The dinosaurs
Which bird became extinct because of predators to its island? Dodo
A fungal disease threatened which trees in the UK? Elm
Red squirrels in the UK are threatened by which animals and from where? Grey squirrels from the USA
The Welsh scientist who collected evidence to support Darwin's work. Alfred Russel Wallace
How many steps result in the formation of a new species? Four
Different varieties of a gene are called: Alleles
Created by: Zigs.uk
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