Protection from being eaten

Shade from the sun

Water storage

Both a and b

Use bladder to store water

Spend a lot of time underground

Withstand dehydration

All of the above

Regular rock

Bones

Caliche

Haboobs

Quatorial flow

Mid-latitude cells

Hadley cells

Desertification

Bajadas

Rain shadows

Different temperatures

Midlatitudes

They are tired

To cool off using evaporation

To smell better

To clean off