Answer:
The continental crust is thicker than the
oceanic crust.
It is 19.3g/cm^3. To find density, you divide mass by volume, or d=m/v
Answer:
trace fossils
Explanation:
Trace fossils are fossils that provide information about the biological activities and behaviors of past organisms.
not really familiar with all this but I think 1. Relative dating is where they estimate or relatively guess around how old it is so you could just put something like "an estimate of the age" or something
