competition

• Organisms need things from their environment and from other organisms in order to survive and reproduce
• What do plants compete for to survive and reproduce?

  Light, space, water, mineral ions (nutrients) from the soil.
• What do animals need?

  Space(territory), food, water, mates.
• Organisms compete with other species and members of their own species for the same resources.
• What is interdependence?

  When each species depends on other species for things such as food, shelter, pollination and seed dispersal.
• The interdependence of all the living things in an ecosystem means that any major change in the ecosystem can have far reaching effects.
• What can be a major change in an ecosystem?

  A species being removed.
• What is a stable community?

  Where all the species and environmental factors are in balance so that the population sizes are roughly constant. Such as tropical rainforests.