Timber used in construction can decay if left in damp conditions due to the growth of dry rot fungi (Serpula lacrymans).
Describe how dry rot fungi decompose timber.
Timber can be treated with different eco-friendly wood preservatives (such as copper sulfate solution, borate solution, or neem oil) to prevent fungal decay.
Design an investigation to find out which of these three preservatives is most effective at preventing the decomposition of pine timber.
Your answer should include experimental details and be written in full sentences.
65 exam-style questions on Edexcel IGCSE Biology Nutrition. Each one has a worked solution and a mark scheme showing where the marks go.