Explain why assigning numerical values to pollutant effects can involve value judgements.

In the subtopic Life cycle assessment, this learning objective focuses on explain why assigning numerical values to pollutant effects can involve value judgements. Within Life cycle assessment and recycling, students should explain this idea in the exact curriculum context rather than as an isolated fact. Approved keywords for this objective include value judgement. value judgement means a subjective assessment that reflects personal beliefs or opinions when assigning numerical values to the effects of pollutants. Avoid students often think that assigning numerical values to pollutant effects in life cycle assessments is purely objective and based on factual data; instead to fix this, students should understand that value judgements are involved because different stakeholders may prioritize environmental impacts differently based on personal or societal values. For exam answers, when studying life cycle assessments, focus on how different stakeholders may have varying opinions on the impact of pollutants, which can lead to value judgements in assigning numerical values.