Write meaning of demoghraphy​

Demography is the study of human populations – their size, composition and distribution across space – and the process through which populations change. Births, deaths and migration are the 'big three' of demography, jointly producing population stability or change.

Explanation:

Hope it helpful

Explanation:

Demography means study of population.It is derived from greek work 'Demos' which means people and 'graphein' which means study.The woed was first coined by Achille Guillard in 1855.But John Graunt is known as the father of demogrphy because he described population in demographic way.

Demography is the statical study of birth,death and migration.

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.

what school and grade?