Answer:
The fossil record helps paleontologists, archaeologists, and geologists place important events and species in the appropriate geologic era.
Explanation:
It is based on the Law of Superposition which states that in undisturbed rock sequences the bottom layers are older than the top layers.
Yea what that person said
It kills the plant so no mineral salt
Biological species is the term for a group of interbreeding organisms that are able to produce fertile young.