Waste management

• What is biodiversity?

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

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

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

  The average standard of living
• What is a consequence of increased resource use by humans?

  More waste is produced, leading to pollution
• What types of pollution will be discussed in the 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 accidentally pollute rivers or streams
• What effect do fertilizers have on rivers and streams?

  They cause dissolved oxygen levels to fall
• 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 a consequence of millions of tons of waste dumped in landfills?

  It destroys habitats for plants and animals
• What can happen to toxic chemicals in landfills?

  They can leach out and pollute the 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 ways human waste reduces biodiversity?

  • Water pollution from sewage and fertilizers
  • Air pollution from burning coal
  • Land pollution from landfills and toxic chemicals
• What should you remember about waste produced by human activities?

  • It reduces biodiversity
  • It can pollute water, air, and land
  • Proper disposal is crucial for the environment