Differentiate between population density and population distribution.
Population density is the number of individuals in a population per unit area. In contrast, population distribution is the pattern in which individuals in a population are dispersed or spread out within a specific area.
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Explain how birth rate, immigration, death rate, and emigration affect population growth.
A population may grow through births or immigration, the movement of individuals into a population. A population may shrink through deaths or emigration, the movement of individuals out of a population. Population growth may be calculated using the formula: (birth rate + immigration) – (death rate + emigration) = population growth
Differentiate between density-dependent and density-independent limiting factors and give at least two examples from the lesson of each.
Density-dependent limiting factors depend on the size of a population. Density-independent limiting factors affect all populations the same, regardless of population size. Density-dependent limiting factors include disease, parasites, competition for food, water, and shelter, and predation. Density-independent limiting factors include natural disasters, climate, and human activity.
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