Final answer:
To compare the population density of the insects and the plants, we calculate the number of individuals per unit area for each population. The population of plants has a greater density than the population of insects because there are more plants per acre than insects.
Step-by-step explanation:
To compare the population density of the insects and the plants, we need to calculate the number of individuals per unit area for each population.
The population density of the insects is calculated by dividing the number of insects (820) by the area they live in (1.2 acres):
Density of insects = 820 / 1.2 = 683.33 insects per acre.
The population density of the plants is calculated by dividing the number of plants (560) by the area they live in (0.2 acres):
Density of plants = 560 / 0.2 = 2800 plants per acre.
Therefore, the population of plants has a greater density than the population of insects because there are more plants per acre than insects.