A group of students carried out a study of the population growth of flour weevils. They put16grams and 64 grams of maize flour into two equal boxes K and L respectively. 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.

No. of days after introduction of weevils | Approximate No. of weevils presentâ€‹ |

K | L |

0 5 40 60 80 100 120 135 150 | 20 20 200 550 560 650 640 650 645 | 20 20 300 800 1300 1750 1750 1740 1748 |

- Using a suitable scale, draw two graphs on the same axes from the results in the table. Plot approximate number of weevils present on the Y â€“ axis.
- What were the approximate numbers of weevils present in the two boxes on the 70th day.

Number in K

Number in L -
- On the what day was the population of weevils in K 580.
- Between which days was the population difference greatest.

- Account for the shape of graph L between day 5 and day 100.
- State factors that would make the human species assume the graph curve between day 100 and day 150.