the population resources and pollution model Flashcards
What does the Population, Resources, and Pollution (PRP) model illustrate?
The PRP model shows the relationship between population, resources, and pollution, highlighting both positive (+) and negative (-) feedback loops created by these relationships.
How does the population interact with resources in the PRP model?
The population acquires and uses resources to grow, and this usage creates pollution, which in turn affects the population.
What is a positive feedback loop in the PRP model?
A positive feedback loop occurs when the population grows as more resources are acquired every time there is a demand for them, leading to further growth.
What is an example of a negative feedback loop in the PRP model?
A negative feedback loop occurs when population increases, leading to more resources being needed. This results in more pollution from resource extraction and fossil fuel combustion, which degrades the environment and impacts natural resources, causing the population to decrease.
How does pollution affect the environment and population in the PRP model?
Pollution degrades the environment, impacting natural resources (e.g., bees die due to pollution, affecting crop yields), which reduces the available resources and causes the population to decrease as it cannot be sustained
What is the relationship between resources and pollution in the PRP model?
The acquisition and usage of resources to support population growth leads to the release of pollution, which in turn degrades the environment, affecting the availability of natural resources.
