Match the era on the left with its characteristic on the right. Mesozoic
?
When Earth formed
Paleozoic
?
The age of dinosaurs
Cenozoic
?
When most of our
limestone and coal formed
Precambrian
The era of humans

Aregion is an area of land that has common features. these features can be natural, such as climate or landscape. they can also be artificial, such as language or religion. the xinjiang uyghur autonomous region, above, is an area of china inhabited by uyghurs, a muslim group with ethnic ties to turkish people.