Fix grammar errors in this sentence: Although it is impossible to increase the fertility rate in the short run, the problems of aging process is still alleviated by research and effective developments and policies.
The population of, the population of, the population of, the population of, the population of, the population of, the population of, the population of, the population of, the population of, the population of, the population of, the population of, the population of, the population of, the population of, the population of, the population of, the population of, the population of,
The population of, which is the population of, is increasing, but the population of, which is the population of, is decreasing.
The population of, which is the population of, is increasing, but the population of, which is the population of, is decreasing.
The population of, which is the population of, is increasing, but the population of, which is the population of, is decreasing.
The population of