1. Identify and explain when countries may choose to intervene with pro natalist and anti natalist policies.

A country keeps a continuous note on the population of its country. Population should always be kept under check . Hence the government as put forth various population policy. The pro natalist is a population policy in which more births are encouraged using various methods. This decision is taken when there is increased  death in a region  due to natural disaster or pandemic. Anti natalist policy is in which the population is kept under control when there is drastic increase in the population in a region.

Answer (d) may increase or decrease porosity through dissolution or deposition;