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Environmental Science (MindTap Cou...

16th Edition
G. Tyler Miller + 1 other
ISBN: 9781337569613

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Chapter
Section
BuyFindarrow_forward

Environmental Science (MindTap Cou...

16th Edition
G. Tyler Miller + 1 other
ISBN: 9781337569613
Textbook Problem

WHAT ARE SYSTEMS AND HOW DO THEY RESPOND TO CHANGE?

What is the key concept for this section? Define and give an example of a system. Distinguish among the inputs, flows (throughputs), and outputs of a system. What is feedback and what is a feedback loop? Distinguish between a positive feedback loop and a negative (corrective) feedback loop, and give an example of each. What is an ecological tipping point?

To determine

Two key concepts the given section. The meaning of system with an example. The difference among inputs, flows (throughputs), and outputs of a system. The meaning of feedback and feedback loop. Difference between positive feedback and negative feedback loop. The meaning of ecological tipping point.

Explanation

Key concept the given section is that a system has input, flow, and output of energy and matter which can be affected by feedback.

System: A specific set of components that function and interact with each other regularly is called system. For example the human body, a forest, and the Earth

No.CharacteristicsInputsFlows (throughputs)Outputs
1.DefinitionThe energy, matter, and information present in the environment is called input.The energy, matter, and information present within the system is called flows (throughputs)The waste and degraded energy and matter in the environment is called output.
2.ExamplesFossil fuels, sunlight are sources of input.Use of fossil fuel in driving a car is flow.The consumption of energy in car and formation of waster product such as gases is output.

Feedback: Feedback is responsible for increasing and decreasing the change in a system. Positive feedback is when change is increased in a system, and negative feedback is when change is decreased in a system

Feedback loop: Feedback loop continues to change in the system affected by feedback...

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