Which of the following is a factor that affects the growth of population of a species?
I. Predation pressure
II. Availability of space
III. Climatic conditions
Population density is the number of individuals of a species per unit area at a given time. A population experiencing a rise in population density is considered to be growing. The factors which affect the growth of a population in a particular habitat are -
Availability of food - more the availability of food, greater are the prospects of increase in the population density.
Availability of space - Increase in the availability of habitable land can help a population to grow.
Predation pressure - High risks of being hunted and killed by predators adversely affects the population growth.
Climatic conditions - Favourable climatic conditions would favour increase in population density and hence favour growth.