Below is a diagram of a poorly planned town showing some building and facilities
a) Giving evidence from the diagram, state two likely sources of water pollution. (2mks)
b) State three ways that the positioning of the refuse pit and sewage works pose danger to the residence of the town. (3mks)
c) Residents living close to the marsh are likely to suffer from malaria. Explain. (1mk)
d) Suggest two control measures to overcome water pollution in the area. (2mks)
A group of students carried out a study of the population growth of flour weevils. They put 16 grams of maize flour into two equal boxes K and L respective . They then introduced equal numbers of weevils into the boxes. The boxes were kept under similar environmental conditions. The weevils were counted at intervals and the results recorded in the table below.
(a) Using a suitable scale ,draw two graphs on the same axes from the results in the table.