So I am researching population growth in the US. And food consumption in the US. My questions I am wanting to understand is 1) I can get the population and population density of any state/town in the US. But I am wondering about how much food we have and the rate of consumption of what foods in what regions? For example Take cows and chickens for example how can one determine a rough estimate on how many cows and chickens we have in a certain region and at what rate we are consuming them / replacing them? Say for example we have 100,000 cows in Wyoming and 10,000 people that eat red meat on a daily bases. Say they eat on average 3lb of red meat a week. Say the average cow weighs 1,000 lb. yields a 650 lb of eatable red meat. If creating a new cow to reach full adult hood takes 3 to 4 years. Then does anybody see a problem with are consumption? I do we simple are over populating to fast to have an equal balance? Unless we can produce 1000 and 1000 of cows at the same time. And even that with are population exponentially growing their is going to be problems. Thank god for people that don't eat red meat or eat chicken. Correct me if I am wrong this is only going to get to be more of a problem. For other natural resources like like oil , electric ,gas ,...etc in theory if we drill deep enough we have close to an unlimited supply or at least enough to support the whole world for a while. May be my math is wrong but I worked out that we would run out of oil ,electric , gas ,....etc much later then we would run out of space on earth for people. But when it comes to food and trees this is another story! So the government shouldn't be so focus on oil , other energy consumption stuff as much as it should be with the population , food , and enviroment/ecosystem (these factors are the most important since they are the essential necessities of all life). Question 2) I have research how environmentalists and wild life people get a population count /density count on different types of animals and how they flow thru the world. But all their methods are crude and left open for a lot of mistakes in counting. (i.e it is not as easy as getting it from humans tax forms / census count which is more exact since mostly everybody has to do these.) So I ask how can we determine a rough estimate on cow and other animal populations that we consume. Unless we know where they all are and can physically count them? Because we could not be aware of it but we could be making cows extinct in a few years from now based on a mis-calculated count?