Forestry managers want to investigate whether wrapping the lower trunk of young willow saplings in biodegradable wire mesh guards affects the surface area of bark stripped by wild deer.
Design an investigation to determine if the presence of biodegradable wire mesh guards affects the surface area of bark stripped by wild deer.
31 exam-style questions on Edexcel IGCSE Biology The organism in the environment. Each one has a worked solution and a mark scheme showing where the marks go.