How environmental factors affect the variation and distribution of expressed traits in a population

Factors that affect the growth of Populations

What is population "growth"?

What we might talk about as population size is actually population density, the number of individuals per unit area (or unit volume).

Population growth is based on four fundamental factors: birth rate, death rate, immigration, and emigration.

Population growth rate = (birth rate + immigration) - (death rate + emigration)

"Per capita rates" are calculated as the number of events (births, deaths, or growth) divided by the number of individuals in the population over a specific time periodFactors that affect the growth of Populations

What is population "growth"?

What we might talk about as population size is actually population density, the number of individuals per unit area (or unit volume).

Population growth is based on four fundamental factors: birth rate, death rate, immigration, and emigration.

Population growth rate = (birth rate + immigration) - (death rate + emigration)

"Per capita rates" are calculated as the number of events (births, deaths, or growth) divided by the number of individuals in the population over a specific time period

the eye wink at the hand; yet let that be / which the eye fears, when it is done, to see.