Identify the ecological age groups that populations can be categorized into.

 I-Age group before reaching reproductive maturity.

II- Age group capable of reproduction 

III-Age group after the reproductive phase

Iv-Infertile age group

I,II, III

The correct combination of ecological age groups of populations is: (a) I, II, and III - Age group before reaching reproductive maturity, Age group capable of reproduction , Age group after the reproductive phase.

Ecological age groups refer to the categorization of individuals within a population based on their age and reproductive status. These age groups provide insights into the distribution and dynamics of populations in relation to their reproductive capabilities and life stages.

I. Pre-reproductive: This age group includes individuals who have not yet reached reproductive maturity. They are not capable of reproduction and are typically in the early stages of development.

II. Reproductive: Individuals in this age group are capable of reproduction and actively participate in the reproductive process. They contribute to the growth and maintenance of the population through producing offspring.

III. Post-reproductive: This age group consists of individuals who have passed their reproductive stage. They are no longer able to reproduce, but they may still play important roles within the population, such as providing care and support for younger generations.

IV. Infertile age group: Individuals in this age group are unable to reproduce due to factors such as genetic abnormalities, health conditions, or other circumstances. They may still contribute to the population through various non-reproductive roles.