The answer is C because many of the funcions that the family used to serve have been outsourced to other institutions
Answer:
The example for population density is "two jaguars per thousand hectares"
Explanation:
To known the population size per unit area we use population density. Or sometimes use it for volume. It is expressed in quantity or in the type. Mostly used for the living organisms, specifically humans. It's unit is expressed in square kilometers or may say in square mile. It is used for country, city, town and another territory. The negative relationship is found to affect the population density. It depends on the reproduction and survival.
Without wolves of course, because wolves eat deer :D
The keystone species is the one at the bottom of the pyramid, if we look at it like a pyramid. If the grass dies, then the deer cannot get food and die, and the predator cannot eat and dies, and the whole ecosystem can fall apart.