While tourism is often criticized for its carbon footprint, it can also have significant positive environmental impacts, particularly through conservation funding. In many developing nations, the revenue from national park entrance fees, "eco-tourism" taxes, and wildlife safaris is the primary source of funding for habitat protection and anti-poaching programs. Without the economic incentive of tourism, many of these natural areas would be at higher risk for logging, mining, or agricultural conversion. Additionally, tourism can raise environmental awareness among travelers; visitors to a marine sanctuary or a rainforest often return home with a deeper commitment to global conservation. In the Galapagos Islands, for example, the strict "visitor-to-guide" ratios and entry fees fund the world's most successful invasive species eradication programs. Furthermore, the "Blue Economy" in places like the Maldives or the Great Barrier Reef relies on the reef's health for tourism, incentivizing local governments to invest in wastewater treatment and sustainable energy. When managed correctly, "responsible tourism" acts as a financial shield that protects the world's most vulnerable ecosystems from more destructive forms of economic development.