Human population

Human Fecundity

Refers to the ability of humans to reproduce, with the birth rate per capita declining over the past 50 years.

Replacement Rate

The rate at which people have children to "replace" them when they die, contributing to the declining birth rate.

Age Pyramids

Represent the age distributions across a population, with different shapes indicating population growth, decline, or stability.

Immigration

Can help counter the decreasing population by bringing in new residents.

Human Population Growth

Despite declining birth rates, the population has grown rapidly due to factors like advancements in agriculture, healthcare, and labor laws.

Biocapacity

Refers to the Earth's capacity to sustain life and biodiversity, which is threatened by the rapid growth of the human population.