While it's true that Fossils hardly even contain DNA, they can still provide numerous clues in order to identify and verify an organism.
For example, in terms of Dinosaurs, their bones and fossils have provided enough evidence to provide an evolutionary link with modern birds.
Carbon dating is another way to find the age of a fossil which provides more information on it's surrounding habitat and the animals it interacted with.
Answer: This is called chlorine
Explanation: 18
An earthquake? Is it multiple choice?
Answer:
It could change the DNA code resulting in failures
Explanation:
I think its the reproductive system, but im not sure.