Question

why have deserts developed in the south-western part of north america?name the important desert of this region

Answer 1

During the Paleocene, some time after the dinosaurs' extinction, most of North America (including Alaska) was covered in evergreen tropical rain forests. But after some time, due to a heavy decline in precipitations, these jungles were replaced by dry deciduous forests as well as arid grasslands.

Answer 2

Answer:

During the Paleocene, some time after the dinosaurs' extinction, most of North America (including Alaska) was covered in evergreen tropical rain forests. But after some time, due to a heavy decline in precipitations, these jungles were replaced by dry deciduous forests as well as arid grasslands.