At the midpoint of the 20th century the percentage was 75
The answer is the Mediterranean
Fish sharks some types of dinosaurs
I think the last one but don’t quote me on that
So we have two limestone beds, one of 550 million years old (well, the fossils are, but it suggests that the rock was created around the same area) and another that is 400 million years old. The first one is then older than the second - the correct answer is c!
