This process does not lead to an economic explosion not only because of the supply-side barriers at potential output (full employment) but because at each "round", the increase in consumer spending is less than the increase in consumer incomes. That is, the marginal propensity to consume (MPC) is less than one, so that each round some extra income goes into saving, leaking out of the cumulative process. Each increase in spending is thus smaller than that of the previous round, preventing an explosion. Efforts to preserve ecosystems at risk
Some of the worlds most exceptional biodiversity is located in the Galapagos Islands. These islands were designated a UNESCO World Heritage site in 1979, then added to UNESCOs List of World Heritage in Danger in 2007. IGTOA is a non-profit dedicated to preserving this unique living laboratory against the challenges of invasive species, human impact, and tourism. For travelers who want to be mindful of the environment and the impact of tourism, it is recommended to utilize an operator that is endorsed by a reputable ecotourism organization. In the case of the Galapagos, IGTOA has a list of the worlds premiere Galapagos Islands tour companies dedicated to the lasting protection and preservation of the destination. Natural resource management
Natural resource management can be utilized as a specialized tool for the development of ecotourism. There are several places throughout the world where a number of natural resources are abundant, but with human encroachment and habitats, these resources are depleting.
People with BMS are more likely to be middle aged or elderly, and females are three to seven times more likely to have BMS than males. Some report a female to male ratio of as much as 33 to 1. BMS is reported in about 10-40% of women seeking medical treatment for menopausal symptoms, and BMS occurs in about 14% of postmenopausal women. Males and younger individuals of both sexes are sometimes affected.Asian and Native American people have considerably higher risk of BMS. Notable cases
Sheila Chandra, a singer of Indian heritage, retired due to this condition. References

Scala A; Checchi L; Montevecchi M; Marini I; Giamberardino MA (2003). "Update on burning mouth syndrome: overview and patient management". Crit Rev Oral Biol Med. 14 (4): 275–91. doi:10.1177/154411130301400405. PMID 12907696. == External links ==