Fossils Flashcards
1
Q
What is a fossil?
A
The preserved remains of a dead organisms
2
Q
What are the ways fossil are formed?
A
- Dead animals and plants preserved in amber
- Footprints covered in sediment, then become rocks
- Bones, shells and leaves covered by sediment, eventually replaced by minerals
3
Q
Theory of evolution idea:
A
Different species have evolved from simple life forms
4
Q
What is the evidence for natural selection?
A
Peppered moths
Antibiotic-resistant bacteria
5
Q
Key points for natural selection
A
- Wide range of variation
- Differences in genes
- Suited to environment most likely to survive
- Offspring
6
Q
Main features of Darwin’s theory…
A
- Competition for limited resources
- Individuals in a population show natural variation
- Successful characteristics are inherited
7
Q
Main ideas of Lamarck’s theory…
A
- The law of use and disuse
- The law of inheritance of acquired characteristics
