OCR GCSE Biology B · J257
Paper 1 (Foundation), Paper 2 (Foundation), Paper 3 (Higher), Paper 4 (Higher)
Revise: Scientific CommunicationThe reason is its rationale. Begin with the question or prediction, then identify the factor being changed and the outcome being measured. Use terms precisely: in an investigation of whether water volume affects cress-seed germination, water volume is the independent variable and the number of seeds that germinate in a set time is the dependent variable.