Disrupting the System
Disrupting the System is a Grade 7 science concept from Amplify Science (California) Chapter 1: Stability and Change in Populations, explaining how external factors destabilize ecosystem equilibrium. When events like storms or temperature shifts disrupt the birth-death balance, population sizes shift until a new equilibrium is found. Stable ecosystems are sensitive to disruption.
Key Concepts
Ecosystems are sensitive to change. A stable system can become unstable if an external factor (like a storm or temperature shift) disrupts the balance.
When this happens, the number of births and deaths become unequal , causing the population size to shift until a new equilibrium is found.
Common Questions
What disrupts a stable ecosystem?
External factors like storms, temperature changes, invasive species, habitat loss, or disease can disrupt ecosystem stability. These disturbances alter birth rates, death rates, or resource availability, causing population sizes to shift.
What happens to a population when the birth-death balance is disrupted?
When births and deaths become unequal due to a disruption, the population size changes until a new equilibrium is reached. If deaths exceed births, the population declines; if births exceed deaths, it grows until resources limit further growth.
Can an ecosystem recover from disruption?
Yes. Ecosystems often recover if the disruption is not too severe or permanent. As conditions stabilize, birth and death rates rebalance, and the ecosystem settles into a new equilibrium — which may differ from the original state.
What do Grade 7 students learn about ecosystem disruption in Amplify Science?
In Chapter 1 of Amplify Science California Grade 7, students learn that stable ecosystems can be destabilized by external factors, analyze how disruptions alter birth-death balance, and understand how populations respond to find new equilibrium.