Final answer:
The density of the rabbit population is 0.5 rabbits per square kilometer, calculated by dividing the population size (300 rabbits) by the area of the farm (600 km²).
Step-by-step explanation:
The density of a rabbit population is calculated by dividing the population size by the total area of the farm. In this case, we have 300 rabbits living on a farm that is 600 square kilometers in size. So, to find the density in rabbits per square kilometer, we would perform the following calculation:
Population Density = Number of Rabbits ÷ Area of the Farm
Population Density = 300 rabbits ÷ 600 km²
Population Density = 0.5 rabbits/km²
Therefore, the density of the rabbit population is 0.5 rabbits per square kilometer.