What is an environmental factor that causes the population to decrease?

Answer 1

Populations go down for a variety of reasons, broadly classifiable as increasing death rates (war, disease, famine, natural disaster such as earthquake or tsunami) or decreasing birth rates (which happens generally as a result of higher standards of living - wealthier people want fewer children).

Second opinion, government could but they won't and common sense if they don't Mother Nature will take care of it at some point. Only problem is she may do too good of a job. We had our chance and blew it. 7 billion now, 9 billion by 2040 which means 12 billion by 2100. The planet cannot support that many and will take care of the problem. No one in power wants to admit to the facts and make the hard choices now that could maybe give us a chance. People just keep breeding like rats and we will all pay the price.

Answer 2

The causes of human population to decrease are as folllows:

1. High infant and child mortality rate.
   
2. Lack of health education.
3. Natural calamities.
4. Economic status.
5. Lack of health facilities.

Answer 3

Populations grow as long as there is sufficient:

• food
  
• room
  
• water
  

They also are controlled by:

• The introduction of surplus predators
  
• Disease
  
• Toxins in the environment
  
• Environmental factors
  
• Mutations in the population
  

Answer 4

Some facors that would cause population to decrease is shortage of food, low Birth Rate, diseases, emigration, and lack of money or jobs.

Answer 5

If a population decreases it could be because of a disease epidemic, shortage of food, or a decrease in reproduction for example in china they have the one child policy.

Answer 6

you can have a lack of food, urban space, fresh water sources, high taxes, too few hospitals, lack of police, a slack in the law, bad weather, poor entertainment sites, and so much more.

Answer 7

decrease in birth rate can lead to the population decreasing