Answer:
Because they represent the leftover building blocks of the solar system-scientists can study these and learn about the composition of the solar system.
Fossils have animals, plants and living organisms imprinted into them, it helps us understand what lived and thrived in certain environments. The age of the rock can also help you understand when that thing lives.I hope this helps!
This is called Bacterial Transformation.
That genes as shared by the parents to the offspring and and the existence of dominant and non dominant genes.