Mutations can be considered as one of the raw materials of evolution because they:
1) contribute to new variations in organisms
2) are usually related to the environment in which they appear
3) are usually beneficial to the organism in which they appear
4) usually cause species of organisms to become extinct

Is there any species that went extinct in recent years due to natural causes (not caused by human interaction). if so, what caused it?

Toorale man murder mystery < - your lab link 1. how was the toorale man found? 2. what did archaeologists learn about the burial? why is the burial important? 3. what information were the scientists able to learn from the skeleton itself? 4. why is the question of whether the injuries came from a stone or steel weapon important? how could scientists distinguish between the different types of weapons? 5. what did the carbon dating and soil testing tell scientists about toorale man? why are the dates interesting for scientists?

Nucleic acids offer variability because they contain alternate forms of genes called .