The arid regions of the world rely heavily on irrigation in order to grow crops. Which of these is the biggest consequence that occurs with excessive irrigation? A. soil exhaustion

B. salinization

C. abrasion

D. leaching

Write a short paragraph of about 150-300 words. explain how the physical environment can limit human activities.

The mantle is made up of which structural zones?

Sandstones that form in aeolian (wind/desert) environments appear very different from other sandstones, such as those formed in a beach/ shoreline environment and in rivers on land. give three identifying properties for each of the three sandstones that would tell a geologist which depositional environment they formed in. consider things such as the relationship between transportation and grain size, shape, roundness, sorting, fossils and composition.