Strengths of Individual Investigation From the 2017 Biology Subject Report: “A discussion of the strengths – this might be quite general or it might refer to specific parts that worked well or data that was consistent.” Example of a general discussion from an investigation into the effect of environmental temperature on how often house crickets chirp:

Example of a specific part – one condition that worked well from an investigation into the effect of copper chloride versus iron chloride solutions on growth of algae:

Example of a specific part – controlling variables that worked well from an investigation into the effect of ethanol (treated with various amounts of liver enzymes) on the amount of pigment that leaks out of beet root cells:

Example of a specific part – the use of new technology that worked well from an investigation into the effect of the buffering capacity of different soil types on the surface area of leaves of plants exposed to acid: