Probably convince the Goverment 3 times if not give up us e your water filterers instead
One simple and easy way that scientists can accurately date fossils found is through the ground levels. When you take a big chunk out of the earth, you can see the changes in the texture in the "ground" Each "layer" represents a set of years. And as you get further and further into the ground, fossils become older and older.
The biosphere is composed of all living organisms
They have the same times, same food, and yeah
Hope this helps