Competition and Interdependance

• What should you be able to describe by the end of the video?

  Levels of organization in an ecosystem, competition, and interdependence
• What is the definition of a habitat?

  • The environment in which an organism lives
• What is the definition of a population?

  The total number of organisms of the same species living in the same geographical area
• What is the definition of a community in an ecosystem?

  • The populations of all the different species that live in the same habitat
• What does the term biotic refer to in an ecosystem?

  • The living part of the environment
• What does the term abiotic refer to in an ecosystem?

  • The nonliving part of the environment
  • Includes factors like water and minerals in the soil
• What is an ecosystem?

  Both the biotic and abiotic parts of an environment and their interactions
• Why do living organisms require materials from their surroundings?

  To survive and grow
• What resources do plants compete for?

  • Light
  • Space
  • Water
  • Mineral ions in the soil
• What resources do animals compete for?

  • Food
  • Water
  • Mating partners
  • Territory
• What is interdependence in a community?

  How different species depend on each other
• How do lions and zebras demonstrate interdependence?

  • Lions eat zebras
  • Zebras depend on grass and shrubs for food
• What role do bees play in plant reproduction?

  • They spread pollen, which is essential for plant reproduction
• What happens if a species disappears from a community?

  It can affect the whole community
• What is a stable community?

  • A community where populations of different species remain fairly constant
  • Populations are in balance with each other and abiotic resources
• What is the relationship between populations and abiotic resources in a stable community?

  Populations are in balance with each other and with abiotic resources