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Facts

  • Estimated World Population: 8.1 billion in 2024

The Human Population & Biodiversity

  • The UN estimates it will increase to 10.9 billion in the year 2100

How is growth still possible?

  • About 4 people are born & about 2 people die every second around the world
  • Medical advances, lower mortality rates, and an increase in agricultural productivity (processed foods) allows the population to continue to grow.
  • We are growing exponentially!
  • Buildings are now being built upwards and closer together, using vertical space and saving the area we have left on the ground.

Humans & Biodiversity

  • Biodiversity- the variety & variability of life on Earth
  • The more we grow, the more resources we need; which leads to:

Ecological Footprint

  • Over harvesting/hunting plants & animals
  • Deforestation
  • Habitat fragmentation
  • Pollution
  • It is the amount of environment required to support a lifestyle
  • Many of our activities also lead to climate change which affects biodiversity
  • Can be calculated by measuring resources a person uses to survive
  • This can include (but is not limited to):
  • Space (housing)
  • Food/Water

Human Carrying Capacity

  • Clothing
  • Energy use
  • Carrying Capacity: The amount of organisms the environment can sustain
  • The earths resources are limited which means there is a carrying capacity for humans
  • Calculating it is difficult, and it seems to shift constantly
  • Humans don't reproduce, consume resources, or interact with the environment uniformly
  • It would take 1.8 Earths to sustain our current population, and we could reach 3 Earths by 2050

EQ: How is the human population growing and impacting biodiversity?

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