evolution

Question 1

evolution occurs because of natural selection

Answer 1

1. mutations occur which provice variation between organisms
2. if the mutation has a survival advantage the organism is more likely to survive until the breeding age
3. mutation will be passed onto the offspring
4. the frequency of this mutation occuring in future generations of the specie is more likely to happen

Question 2

fossils are formed from

Answer 2

1. parts of organisms that have not decayed because of lack of oxygen and moisture were not present meaning that the microbes that cause the decay cannot survive
2. parts of the organism such as teeth, bones and shells are replaced by minerals as they decay forming a rock structure of the original part
3. soft tissue of the organism do not form fossil/they may be damaaged sometime/ its hard to find out