Ahuman's most rapid growth, both physically _ and _ mentally, occurs between and years old.

The answer is: 0 to 2 years.

Explanation:

From 0 to 2 years, from the moment of the birth of the baby its maximum growth occurs, a normal baby usually weighs about 3.5 kg, and measure around 50 cms. By the fourth month he will have doubled that weight, and by the end of the first year he will have tripled it. This growth, although amazing, is very sensitive to external factors such as feeding or living conditions, although it also depends on the genetic inheritance that the baby has received from its parents.

The answer is: 0 to 2 years.

i'm thinking (a) to keep sand in place; ////////////

explanation: a sand fence or sandbreak, like a snow fence, is used to force windblown, drifting sand to accumulate in a desired place. sand fences are employed to control erosion, sand dune stabilization, keep sand off roadways, and to recruit new material in desert areas.

the water is warmed up by the sun and then it evaporates into the atmosphere. the sunlight warms the water by its heat. water is then cooled down and condensation takes place. the water then finally returns back to the earth by the process of precipitation in the form of rain or ice.

explanation: