Waste management

• What is biodiversity?

  The variety of different species of organisms
• Why is maintaining rich biodiversity important?

  It makes ecosystems more stable
• How has the human population changed over the last 100 years?

  It has increased massively
• What has increased alongside the human population?

  The average standard of living
• How does increased human activity affect Earth's resources?

  Humans use more resources than ever before
• What is the relationship between waste production and pollution?

  More waste leads to increased pollution
• What type of pollution will be discussed in this video?

  Water, air, and land pollution
• What does sewage contain?

  Urine and feces
• How is sewage treated in the UK?

  It is treated before being released
• What can happen if untreated sewage is released?

  It can pollute rivers and streams
• What effect do fertilizers and untreated sewage have on aquatic ecosystems?

  They cause dissolved oxygen levels to fall
• What can happen to aquatic organisms due to low oxygen levels?

  They can die
• What can toxic chemicals from factories do to rivers?

  They can kill animals in the river
• How does air pollution from burning coal affect biodiversity?

  It can kill plants and animals
• What is one consequence of landfills?

  They destroy habitats for plants and animals
• What can happen to toxic chemicals in landfills?

  They can leach out and pollute soil
• What happens when toxic chemicals are dumped directly onto land?

  They can kill living organisms
• Why is it important to handle waste materials carefully?

  To avoid harming the environment
• What are the main types of pollution caused by human waste?

  • Water pollution
  • Air pollution
  • Land pollution
• How does human waste impact biodiversity?

  • Reduces biodiversity in aquatic ecosystems
  • Kills plants and animals through pollution
  • Destroys habitats in landfills