Why are many scientists concerned about population growth? They're afraid the unemployment rate will increase. They're worried a
bout running out of land to build houses on. They're not; they think it's a good thing. They think it could lead to a lack of natural resources in the future.
The last option is the correct answer. Scientists are concerned about population growth because the planet's resources are finite. The more people, the greater the difficulty to make an efficient use of resources, and thus, the harder life gets. Thomas Malthus, English scholar, says: "The power of population is indefinitely greater than the power in the earth to produce subsistence for man" and the biologist Paul Ehrlich states "We have a finite planet with finite resources. In such a system, you cannot have infinite population growth". It is, without a doubt, a problem that should be more present in the individuals' lives.
Scientists are concerned about the growth of the population because the more people are born. The less natural resources the planet has.
according to statistics while the population has increased by 35% (2000 million people) since 1992, it has decreased by 29% in mammals, reptiles, amphibians and fish, in addition to the 26% reduction in fresh water and the massive loss of forests.
Globalisation helped to lift a billion people from extreme poverty and improved the lives of billions more. The United States also gained an estimated 11%–19% of its annual GDP. Yet many Americans are concerned about the fairness of these gains.
