The word for people who study fossils are paleontologists and they may use paint brushes to clean fossils for soft sedimentaries.
Answer:
Mate choice, competition, and the variety of resources available are the key factors.
Explanation:
The possible evolutionary explanation for death is that an organism which was less adapted to its environemnt will die out sooner than will the one that was adapted more to it. Another possible way of thinking is that each organism has to die in order for his offspring that will likely be slightly more adapted to the environment to live on.
