Demonstrate understanding of how an animal maintains a stable internal environment
This standard asks you to explain how animals keep their internal conditions stable (like body temperature, blood sugar, or water balance) even when their environment changes. You need to describe the control systems that do this work, and show how the body responds when something goes wrong. At higher grades, you'll dig deeper into *why* these systems matter or explain the actual chemistry and physics behind them.
You describe a control system and its parts, showing how an animal maintains stable conditions and what happens when something disrupts the system.
You explain in detail how a specific disruption causes the system to respond and restore balance, using feedback mechanisms to link cause and effect.
You go deeper by discussing why the system matters for survival, explaining the actual biochemistry/biophysics involved, or analysing how the system can break down under extreme conditions or disease.
Standards typically taken alongside or after this one. Same subject, grouped by level.