The data below shows the average number of ticks per animal in a certain farm before and after spraying the animals with a certain chemical. The spraying was done once every month. The data was tabulated as shown below.
|Average number of ticks||200||90||40||20||16||25||45||90|
- Plot a graph of ticks against time
- Account for the shape of the graph between:
- 0 and 8 months;
- 10 and 14 months.
- From the graph, determine the average number of ticks after spraying the animals for five months.
- If the animals were allowed to graze in an open field, construct a food chain with five organisms in which ticks are secondary consumers.
- State three methods by which the average number of ticks per animal could have been estimated.