Answer: Plasma is a main component of blood, which also consists of mostly water
The desert and the tundra receive less rainfall than any other biomes.
The shortest Wars were: The Spanish-American War of 1898 lasted approximately 6 months; however some historians claim 8 months. Operation Desert Storm (January and Febuary 1991) lasted approximagtely 45 days. The "occupation" continued longer but the War was over in essentially 45 days.
I believe the answer is: Family structures are changing, but families remain important to American life.
The main reason of the changing structures is the increase in divorce rate, and non-monogamous relationship. In the past, almost all children only have one father and one mother. In recent years, children could have more than 2 parents or even only one (in case of single parenthood)
