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HUMAN POPULATION

HUMAN POPULATION. MPHO SEFATSA RHODES UNIVERSITY PSYCHOLOGY (Hons.). OVERVIEW. Why study human population World population projections Population issues Influence of human population on the planet Challenges influenced by human population Possible interventions. HUMAN POPULATION.

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HUMAN POPULATION

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  1. HUMAN POPULATION MPHO SEFATSA RHODES UNIVERSITY PSYCHOLOGY (Hons.)

  2. OVERVIEW • Why study human population • World population projections • Population issues • Influence of human population on the planet • Challenges influenced by human population • Possible interventions

  3. HUMAN POPULATION • Carrying capacity • “Ability of an area to sustain a particular number of a population without significant negative impacts.” • Overpopulation - Maximum number increasing carrying capacity

  4. WHY STUDY HUMAN POPULATION • To understand the relationship between population variables: • -social • -environmental • -economic • -geographical

  5. PROJECTED POPULATION • World population: • 1990 – 1,633bn • 2010 – 6,812bn • 2012 – 7bn • 2050: 9, 202, 458, 484

  6. POPULATIONS ACROSS THE GLOBE Figure showing population rates amongst countries

  7. POPULATION ISSUES Social Environmental Economic Political

  8. HUMAN INFLUENCE ON THE PLANET • Depletion of natural resources • Land degradation • Pollution • Increase poverty • Affects the ability of nature to sustain itself

  9. CHALLENGES • Demand for energy and natural resourses • Food security • Biodiversity loss • Water quality and demand management • Human capacity • Climate change

  10. POSSIBLE INTERVENTIONS • Education • Job creation • Improve water quality • Reduce carbon footprint • Balance the demand for energy • Contraceptive

  11. SUMMARY • Population growth has a negative effect on the environment • Overpopulation poses a lot of threats to the environment, thus there is slight imbalance in the ecosystem. • Implementing practical interventions can help us control population growth to a steady rate

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