450 mya, is where you would find fossils.
Explanation:
The first layer would be newer organismis that haven't quite decayed yet.The second and third layer is where the bones of the dead organasims lie, they havent quite been through the whole process yet, but they are nearly complete just about 100,000 years left.The fourth layers have been through alot, and have been there for many many years we can say abot 100,000,000 years.They are ready to become a fossil fuel.
Explanation:
B has water as a reactant
From which one of these items will water evaporate at a different rate?a. Factory
It is B. 3 categories of fish...category Agnatha (aka jawless fish)
category Chondrichthyes (aka cartilaginous fish)
category Placodermi (aka armoured fish)
