An environmental scientist is investigating the impact of ocean acidification on the development of juvenile marine snails (Littorina littorea). They plan to conduct a controlled laboratory experiment to determine whether the pH level of the artificial seawater (pH 7.6 versus pH 8.1) affects the snails' shell calcification rate, measured by the percentage increase in shell dry weight over a 60-day period.
Write a suitable directional (one-tailed) experimental hypothesis for this study.
689 exam-style questions on AQA A Level Psychology Scientific processes. Each one has a worked solution and a mark scheme showing where the marks go.