organisation/biodiversity in ecosystems-B17/18

• What is a food chain?


  A sequence of organisms each dependent on the next as a source of food
• What is the role of a predator in a food chain?


  A predator is an organism that hunts and eats other organisms
• What is a primary consumer?


  An organism that eats producers, typically herbivores
• What is a quaternary consumer?


  An organism that is at the top of the food chain and eats tertiary consumers
• How is percentage change calculated?


  % change = (change / original) x 100
• What does the total rate represent in population studies?


  The total rate is the change in population size over time
• What are the key definitions related to communities in ecology?

  • Community: All organisms in a habitat/system
  • Biotic community: Interactions with abiotic factors
  • Niche: Role of an organism in its environment
• What is the role of decomposers in an ecosystem?


  Decomposers break down dead matter and waste, releasing nutrients back to the soil
• What is the impact of pollution on ecosystems?


  Pollution can disrupt food chains and harm organisms
• What is eutrophication?


  Eutrophication is the process where excess nutrients lead to algal blooms
• What are the consequences of eutrophication on aquatic plants?


  Plants cannot photosynthesize due to high algal cover, leading to decay
• How do peat bogs contribute to carbon storage?


  Peat bogs store carbon in dense layers, reducing greenhouse gas emissions
• What are the biological consequences of global warming?


  Global warming leads to habitat loss and changes in species distribution
• How does rising sea levels affect low-lying areas?


  Rising sea levels can flood low-lying areas, leading to habitat loss
• What changes occur in animal migration patterns due to climate change?


  Migration patterns change as animals adapt to shifting climates and seasons
• What is the effect of temperature changes on ecosystems?


  Temperature changes can alter species interactions and ecosystem dynamics
• What are the factors affecting biodiversity in ecosystems?


  • Pollution
  • Climate change
  • Habitat destruction
  • Invasive species
• What are the consequences of habitat loss due to global warming?


  • Reduced biodiversity
  • Altered migration patterns
  • Increased competition for resources
  • Changes in species interactions