The reason countries buy oil from other countries, even though that country already has oil, is for trade. For example, country A can make ten cars in a year or a hundred computers. Country B can make 15 cars in a year or two hundred computers.
What Factors Affect the Growth of the Population? For example, as the world population rises, the pressure mounts on the agricultural sector to feed the millions of extra mouths.
In predicting the rise of the world population, scientists use a number of variables. Fertility Rate The factor which affects the growth of the population in the biggest way is the fertility rate. The fertility rate is typically measured by the number of children per one woman of child-bearing age.
If the fertility rate is larger than 2, the rule of thumb is that the population should rise, as there are more children than their parents. On the other hand, if this ratio is below 2, the population of the region may be destined for a decline.
Mortality Rate A key factor affecting the growth of the population is the death, or mortality, rate. Just as the birth of new people increases the population size, deaths decrease it.
The factors that affect the mortality rate include the availability and affordability of quality health care and lifestyle habits — for example, whether they smoke or do physical exercises regularly. Video of the Day Brought to you by Techwalla Brought to you by Techwalla Immigration and Emigration Cross-border migration is the act of people moving from one country to another.
It affects the population size of both the host and destination countries. Emigration is caused by a number of factors, such as fleeing war, finding education, seeking new jobs or joining family members.
When a person emigrates from a country, its population shrinks.
When someone moves to a country from another place, it is known as immigration. Whether or not a person is allowed to immigrate is controlled by the country that will host this person. Government Restrictions There are some people in the world, including politicians, who believe that some countries need to have a birth rate restriction -- in fact, China already has its widely-known one-child policy.
Such a restriction would prevent couples from being able to have more than the restricted amount of children.
The argument goes that this type of restriction would cause fewer resources to be used and prevent overpopulation.Overpopulation: Causes, Effects and Solutions: Overpopulation is an undesirable condition where the number of existing human population exceeds the carrying capacity of Earth.
SUSPS Home Overview What You Can Do History Democracy Misc. Overview they were well aware of the effects of population growth on the environment. the U.S. is the third most populous country in the world and has the highest population growth rate of all developed countries.
2,4 The Census Bureau projects U.S. population to double this. years ago there were less than one billion humans living on earth.
Today, according to UN calculations there are over 7 billion of us.1 Recent estimates suggest that today's population size is roughly equivalent to % of the total number of people ever born.2 This is the most conspicuous fact about world population growth: for thousands of .
Sep 29, · The effects of population growth are varied and vast. While population growth, of any species, may be beneficial to a certain extent, there may come a time when the number in the population exceeds the natural resources available to sustain it.
I think at the world level population growth is a challenge in addressing the global. Sep 25, · Consequences of overpopulation. Smith said that 97 percent of world population growth between now and will occur in the developing world, where governments face serious economic and.
Making People Aware of Family Planning: As population of this world is growing at a rapid pace, raising awareness among people regarding family planning and letting them know about serious after effects of overpopulation can help curb population growth.
One of the best way is to let them know about various safe sex techniques and contraceptives.