Answer:
3 worms per square meter
Explanation:
In order to get to the population density of the worms, we need to take a basic measurement for it. Since we have a land area in square meters, we will take the square meter as a basic unit. On the land of 100 square meters, we have 300 worms. In order to get to the result we need to use the simple formula for population density:
population density = population / land area
300 / 100 = 3
So we have a result of 3, thus meaning that the population density of the worms is 3 worms per square meter.