DETERMINANTS OF POPULATION SIZE AND GROWTH
There are three main factors that determine the ion size and growth of a given country, three factors are birth rate, death rate migration.
how Birth rate affect population
Definition: The birth rate or natality rate of a country refers to the rate at which children being given birth to in that country. Generally, high birth rate may lead to increase in population or over population while low birth rate can lead population
2. how Death rate affect population
Definition: Death rate (or mortality rate) of a country refers to the rate at which people (both adult and children) die in a country. Generally, high death rate leads to population decrease or low population, while low death rate leads to increase in population
how Migration affect population
Definition: Migration is defined as the movement of people from one geographical area to another, involving permanent or temporary residence or settlement. In migration, the region where people are leaving is called the source region while the region where people are entering is called the receiving or destination region.
ROUND WORM OF PIGS
161. LIVER FLUKE
162. ECTO PARASITES
163. TICK
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