layer A is the topmost layer. Layer C contains fossils from the Precambrian era. Layer B contains dinosaur fossils, and layer A contains fossils of mammals. Which two statements are supported by this evidence?
Answer:
The correct statements are:
3. Dinosaurs evolved after Precambrian organisms;
5. Precambrian organisms were the first life-forms to become fossilized, according to this sample;
Explanation: