Biotic factors that a population needs include food availability. Abiotic factors may include space, water, and climate. The carrying capacity of an environment is reached when the number of births equal the number of deaths. A limiting factor determines the carrying capacity for a species.
Answer:
i) Population
ii) Reproduction
iii) Reproductive isolated mechanism
iv) Species
Around the ages 9-14. On average, 12 is the average age.