Some basic facts involved in the population explosion.
D000367:Age Factors; D000383:Agriculture; D001723:Birth Rate; D004044:Dietary Proteins; D004467:Economics; D002523:Edible Grain; D005523:Food Supply; D007182:Income; D009026:Mortality; D011157:Population Dynamics; D011158:Population Growth; D013223:Statistics as Topic; D013997:Time Factors; D014505:Urban Population; D014507:Urbanization
D004044:Dietary Proteins