What restricts the growth of human populations and how?

Question

This is another question from my project. They have some examples listed like resources I understand that they restrict the growth but I dont understand how.

Answer 1

Old age, decease, lack of food and war. Bodies finally wear out, people get sick and die, starve and die and war kills them.

Fairly obvious huh?

Answer 2

Ultimately the human population is only restricted by the food supply. All other restrictions can be overcome. And even the food supply can be partly overcome, by more productive farming methods and maybe some day direct chemical manufacture of food.

Answer 3

Any factors that restrict the growth of a population are called limiting factors. For people, some of the limiting factors are:

1. scarcity of food or clean water
2. availability of living space
3. competition with other people for land, resources (wars)
4. diseases and parasites
5. natural disasters such as hurricanes, earthquakes, tsunamis, drought
6. availability of natural resources such as trees for fuel
7. political controls (governmental policies and repression of certain groups of people within the countries)
8. polluted environment - hazardous chemical wastes, nuclear waste, ...

Answer 4

Resources like food and water...if there isn't enough food like in Africa then people don't live long or reproduce well. Disease epidemics can kill people and make them unhealthy.

Answer 5

Poor diets, not enough food.