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.
1 Flowering plants began to appear late in the period. 2  The Jurassic period also ended with an extinction, but it was not as extensive as the one in the Triassic period. 3  Only a few types of dinosaurs died out.