used to describe a method of rebuilding wetlands where drainage ditches are blocked and dams built to allow the land to flood.

Adozen is 12, and your needing to calculate the weight of one medium egg, so i would do 21/12=1.75 per egg, and check your answer by doing 1.75 * 12= 21 : ) : ): ): ): ) i hoped i

Combustion is the act or process of burning. therefore, i believe the answer is  a: burning wood. 

They cool it down and aluminum cools easily