The science that describes populations is called Demography.
Demography is the study of human population dynamics. It entails the study of the size and density, distribution, and vital statistics such as births, marriages, deaths, aging, migration among other factors that affect a population. In other term is the Quantitive and qualitative aspects of human population.
Erosion and collisions
such as mountain ranges and conyons
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To collect the water and mineral nutrients.
The greatest concentration of water is outside the cell. Therefore, water enters the celland fills the central vacuole, causing the contents of the plant cell to press against the cell wall.
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