Sara poured some sand into a pan. How could Sara best demonstrate wind erosion using this model?
A. Use a spray bottle to moisten the sand with water.
B. Blow into a drinking straw over the sand.
C. Pour a glass of water into the sand.
D. Let a block of ice melt over the sand.

b

Explanation:

reason why is because blowing through a straw demonstrates air so when you blow it against sand or dirt it blows pieces of soil or sand away and in different areas.

as the gila monster consumes the eggs or young of the desert cottontail and gambel's quail, thus its main food supply is only accessible for a restricted time duration every year. however, for this, the gila monsters exhibit three adaptations, which elevate their survival rate in the desert condition.  

first, is that they possess huge bodies, and can consume greater concentrations of food during a small period. secondly, they require to feed infrequently as they can accumulate fat in their tails. ultimately, their rate of metabolism is very low, so that they can burn their reservoirs of fat gradually.  

if the type of the food available changes, then the frequency of beak types will change, because birds with beaks more suited to the available food will be more successful over time.