B7

• What is a key concept in ecology regarding organisms?

  All organisms have relationships with each other
• What types of relationships do mice have?

  With other mice, plants, predators, and environment
• How do mice interact with their environment?

  They breathe oxygen and burrow in soil
• What happens if the mouse population decreases?

  Predators have less food and soil quality decreases
• What is a habitat?

  • The place where an organism lives
  • Examples: field, forest, basement
• What is a population in ecology?

  All organisms of a particular species in a habitat
• What constitutes a community in ecology?

  All populations of different species in a habitat
• What are biotic factors?

  Living factors like food availability and predators
• What are abiotic factors?

  Non-living factors like temperature and soil pH
• What is an ecosystem?

  • Interaction of a community of living organisms
  • With the non-living parts of their environment
• What is the importance of competition in ecosystems?

  Organisms compete for limited resources to survive
• What resources do animals typically need?

  Space, food, water, and mates
• What resources do plants typically need?

  Light, space, water, and mineral ions
• What is interdependence in ecology?

  All species depend on other species in some way
• How does a food web illustrate interdependence?

  • Shows feeding relationships within a community
  • Changes in one species affect others
• What happens if the mouse population increases?

  Grass decreases, affecting rabbits and grasshoppers
• How might hawk populations be affected by changes in mouse populations?

  Hawks may have more mice but fewer rabbits
• What should students focus on regarding ecological relationships?

  Understanding relationships and predicting knock-on effects
• What are biotic factors?

  Living factors affecting organisms or ecosystems
• How does predation classify as a biotic factor?

  It influences the population of another species
• What is the main focus of ecology?

  • Understanding how ecosystems function
  • How ecosystems might change in the future
• What are abiotic factors?

  Non-living parts of the environment affecting organisms
• How does temperature affect photosynthesis?

  Higher temperatures increase enzyme activity
• What happens to animals when temperature increases?

  They use less energy to stay warm
• What are typical exam questions about biotic and abiotic factors?

  Identifying factors and explaining changes
• What biotic factors affect clownfish?

  Predation, habitat competition, and food competition
• What abiotic factors affect clownfish?

  Water temperature, oxygen concentration, and acidity
• How do abiotic factors indirectly affect clownfish?

  They influence other species like sea anemones
• What is the role of sea anemones for clownfish?

  They provide habitat for clownfish
• How do changes in light intensity affect ecosystems?

  They can impact photosynthesis in plants
• What is the impact of carbon dioxide concentration on ecosystems?

  It affects plant growth and photosynthesis
• How do abiotic factors like wind direction affect ecosystems?

  They influence moisture levels and temperature
• What is the significance of soil pH in ecosystems?

  It affects nutrient availability for plants
• How does moisture level impact ecosystems?

  It influences plant growth and animal habitats
• What might happen if the oxygen concentration in water decreases?

  Fish and other aquatic life may struggle
• How do abiotic factors interact with biotic factors in ecosystems?

  They create conditions that affect living organisms
• What must organisms do to survive in their environment?

  They must adapt to their environment
• What are the three groups of adaptations?

  Structural, behavioral, and functional
• What is the main focus of today's video?

  Energy passing through an ecosystem
• What are structural adaptations?

  • Physical features of an organism
  • Examples include shape and color
  • Help organisms survive in their environment