The property of a system, whether living or non-living, to maintain its internal environment is known as Homeostasis. This is achieved by the use of sensors conected to feedback loops, which are also linked to control mechanisms. The overall process is to maintain a constant condition. Examples...

Homeostasis : Websites https://www.bbc.co.uk/bitesize/guides/zc8qdxs/revision/1 https://www.physicsandmathstutor.com/biology-revision/gcse-aqa/homeostasis-and-response/ https://revisionscience.com/gcse-revision/biology/human-body/homeostasis-0 ...

Here is a revision activity for GCSE Biology : Blood Glucose and Type I Diabetes at http://www.e-teach.org.uk/biology/bloodglucose/