The National SAFEKIDS Campaign recommends that no child under the age of 12 be left at home alone. However, consider a child's age and maturity level. For example, if a child is extremely impulsive, it might be best to wait until he or she is older than 12.
Did people and dinosaurs live at the same time? No! After the dinosaurs died out, nearly 65 million years passed before people appeared on Earth. However, small mammals (including shrew-sized primates) were alive at the time of the dinosaurs.
Answer: Dinosaurs lived on Earth for over 160 million years, from the late Triassic period (about 230 million years ago) until the end of the Cretaceous period (about 65 mill â¦ ion years ago).At the end of the Cretaceous an extinction event caused the death of most dinosaur species.inosaurs were extinct 65 million years ago. Dinosaurs were on Earth for 180 million years, but dinosaurs are still here but as birds.