what causes overpopulation and how can it be prevented?
954805
Overpopulation only occurs when the population is greater than the resources available to support it.  Read the Wikipedia entry on overpopulation http://en.wikipedia.org/wiki/Overpopulation for a great explanation on its causes and what can be done to prevent it.  \nGood Luck!!!
801273
Each ecosystem has what is called a "carrying capacity" for the organisms. This is where birth rate = deaths.\n\nThis is because organism's grow in number until the demand or limit of one (or more) factors for life become exceeded.\n\nSome factors are things like water, living space, nutrient source (food) and waste build up.\n\nPopulations can exceed the carrying capacity for a short time but eventually the limit of the environment brings the population back down.
720934
The Earth is in danger of becoming almost totally inhospitable for most higher life forms.  Unless we start being more intelligent and get population and resource management under control, the Earth will do if for us.
82347
Yes, and other countries should follow their example.  There are already too many people on this planet and we need to take action on population growth.
687692
As said earlier - HUMANS\n\nas we consume resources and increase population without any control limits. \nand modern humans seem to have lost any self-preservation instinct that might leave a viable eco-system for their off-spring
215828
Why would you want to reduce population?  That means making our species begin to die off.  I don't think there are any pretty ways to do it: war, forced sterilization, draconian restrictions on child birth, mandated abortions, and propaganda indoctrination campaigns.  Those are you viable solutions, and they all suck.
591207
I've also heard of studies similar to those you're referring to; I agree 100% w/ you that high population density is a pretty feasible reason for homosexuality and violence, these may well be nature's "control mechanisms" for avoiding LOCAL overpopulation. As far as the whole world being overpopulated, I don't agree w/ you.... food production nowadays, for example, could feed more than 100% of the world's population adequately if equally spread among all human beings; furthermore, global birth rates are rapidly declining, which could actually lead to global UNDERpopulation just a few centuries from now.
192798
No one knows - but people have been predicting global economica collapse due to overpopulation since the mid-1800's.\n\nThe thing that rescues us always is Human Innovation. Food production, energy management, distribution techniques, sanitation, medicine, etc. have all improved at incredible rates to keep up with population growth - and they continue to.\n\nIf this is the best answer, please rate it the best answer. Thanks!
206226
to stop the population rise,
72321
The world has become very overpopulated.  I can remember when they talked ZERO POPULATION GROWTH, but that seems so long ago.  Our large population certainly has a lot to do with our dwindling Natural Resources.  Large Cities and their pollution is causing the GREEN HOUSE EFFECT, which is in turn affecting all of us.  Most Governments will not take a stand on an official population policy because of different religous beliefs.  India that you mention is certainly a country that has religous beliefs that would cause a large population.  The problem is also genetic as it is in nearly every human being the urge to procreate.
1035793
Got to be money - too many people have too much and too many people have not enough !!\n\nI'm definately one with not enough !
589454
talent hunt, manpower and wider access to global technology and wealth...but you must have to have a proper planning. make sure, others would be mounting pressure on you not to increase your population. there are many other challenges.
631815
The only way you can prevent the person's children from getting the disease would be to change the genetics of the germ cells which pass the genes on to the next generation. These are the eggs and the sperm. They keep the original genetics that are found in the individual so can be passed on to the next generation.
561996
More births than deaths per year leads to population growth.\n\nIncreased human longevity; improved healthcare; reduced child mortality.\n\nCordially,\nJohn\nhttp://www.GodSci.org\n[God and Science]
470303
You are the type of person that SHOULD have a child. \n\nOverpopulation is a big problem in third world nations and China. Unless you live in one of those nations be a parent. Have one or two children. It is the people have 5-10 children that are the problem. In Western nations we are not having enough children to replace ourselves. If not for imigration our populations would actually be declining. So having a child or two may actually help the world just by helping preserver your heritage. \n\nMore so, that child that you birth. How do you know they will not grow up to invent something that ends world hunger? That creates faster than light travel? You don't. So at best you are limiting yourself and denying the world a chance to meet your children whether or not they do anyting earch shattering. You obviously have compasionate views on life that should be shared. To fight world overpopulation contribute to education and self sufficiency programs for third world nations. The better educated and more affluent a parent is the less likely they are to have exceesive children. Space is also a very good answer to overpopulation. All that land out there waiting for life to visit it. Until then it lays there dormant and dead.
974469
yes, there are too many people living in this earth. if it continues to be this way, then sooner or later the whole earth will be crowded! and the only way to stop it is if people used protection! and if they are too young to have sex then they should wait until they are older or at least use protection or else. no way do i want too live in a crowded world! do you? but we might already be dead before it even happens, but our children or our children's children, etc., might still be alive and they will have to live on a crowded earth and there will be less space for everything. maybe movie theaters will be knocked down to make houses for the overpopulated earth and many other fun places will have to go to make room for people.so remember people, use protection!!!! unless you are married and you want to have kids and you have all the things neccecary to take care of them, but if you don't have anything to support a child, then don't have unprotected sex! ever! unless you are married and...never mind, you read it already and i don't want to repeat myself again, but i do want to remid you of this, NEVER HAVE UNPROTECTED SEX!
425126
The government is unfortunately less inclined towards preventing problems, such as overpopulation, and more inclined towards fixing current ones, such as providing food for the ten children in a family.  I definitely hear what you're saying though, and I think a tax benefit should be given as incentive for not having children.  Talk to your congressman.  Unfortunately, though, I doubt you'll make any progress on this problem under the current administration.