14-6 What is balance in an ecosystem?
Aim: What is balance in an ecosystem?
OBJECTIVE: Recognize that in an ecosystem, every organism is part of an
ever-changing environment.
Key Term
endangered species: species of living organisms in danger of becoming extinct
Lesson Summary
• Changes in an ecosystem usually work together to keep it balanced.
• Natural disturbances such as floods or volcanic eruptions can disturb the balance of an ecosystem.
• Human intervention, such as deforestation, mining, and polluting the atmosphere can also disturb
the balance of an ecosystem.
• Upsetting the balance in an ecosystem may make it hard for some species to survive. These species
may then be in danger of becoming extinct.
OBJECTIVE: Recognize that in an ecosystem, every organism is part of an
ever-changing environment.
Key Term
endangered species: species of living organisms in danger of becoming extinct
Lesson Summary
• Changes in an ecosystem usually work together to keep it balanced.
• Natural disturbances such as floods or volcanic eruptions can disturb the balance of an ecosystem.
• Human intervention, such as deforestation, mining, and polluting the atmosphere can also disturb
the balance of an ecosystem.
• Upsetting the balance in an ecosystem may make it hard for some species to survive. These species
may then be in danger of becoming extinct.