Author Question: In which sphere would we find insects, plants, humans, and bacteria? A) hydrosphere B) biosphere ... (Read 98 times)

ghost! · **on:** Jul 14, 2018

In which sphere would we find insects, plants, humans, and bacteria?

A) hydrosphere B) biosphere C) geosphere D) atmosphere

Question 2

Describe the features and characteristics associated with each stage in the evolution of a mountainous desert.

What will be an ideal response?

nyrave · **Reply #1 on:** Jul 14, 2018

Answer to Question 1

B

Answer to Question 2

A mountainous desert is formed by tectonics driving fault-block mountains up and interior basins between them down. During and after this uplift, streams erode the mountains and bring sediment into the basins, gradually diminishing landscape relief. The streams deposit the sediment in alluvial fans that overlap and form bajadas at the foot of the mountains. When there is greater rainfall, the streams will form a shallow pool in the basin known as a playa lake. When this water evaporates, it leaves behind evaporite mineral deposits, forming a salt flat. With the ongoing erosion of mountains and filling of interior basins, gradually all that is left are rounded remnant knobs of bedrock in a sea of sand, which are called inselbergs.