• state the aim of the experiment illustrated in the diagram;
• determine what would happen to the lime water in conical flasks at the end of
• the experiment illustrated in the diagram;

• give reason for their answers;
• state ways by which the soil component considered in the experiment (soil living organism) is important to soils;
• name the parts of diagrams A(watering can) and B(hand trowel);
• suggest ways of maintaining farm tools;
• state the reason why more food and firewood are needed in parts of West Africa;
• state the causes of soil erosion;
• explain how the need for more food leads to deforestation;
• calculate mean dry mass;
• state the benefits of inorganic fertilizers in crop production;
• mention the ways in which water is important to crops;
• state the management practices that would increase water level and reduce the amount of sediment in the pond;
• state the management practice that would raise the pH level and control leaches in the pond; and
• state the factors to be considered in siting a fish pond.