Which extinction event is responsible for wiping out non-avian dinosaurs?
a. the cretaceous-paleogene extiction
b. the permian extinction
c. the devonian extinction
d. the silurian extinction

The event that is responsible for wiping out of non-avian dinosaurs is is the event of the Cretaceous-Paleogene extinction.

Explanation:

the precambrian aged rocks could be found in australia. australia is a region that has a lot of ancient civilization history from million years ago. in this region, there are a lot of recognizable fossils buried in its land which is considered a precambrian-aged rocks

20: 5

explanation:

about 20% of the world's population lives in   southwest asia, but on less than 5% of the world's   land area.