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Preparation for PPT for Biology 4

Keywords for B4
21st Century Science OCR

Keeping a steady state inside your body
The part of the control system that detects changes in the system and passes this
information to the processing centre
Processing Centre
The part of the control system…

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Preparation for PPT for Biology 4

Organs in the body which remove waste urea from the blood, and balance water and salt
The removal of waste products of chemical reactions from cells
A waste product made by the liver from the breaking down of amino acids the…


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