The heavy-duty PVC material helps protect you from punctures, so feel free to take this to your favorite lake. Just in case, though, the multiple air chambers will help you get back to shore.
The market-driven approach to correcting externalities is to  internalize  third party costs and benefits, for example, by requiring a polluter to repair any damage caused. But, in many cases internalizing costs or benefits is not feasible, especially if the true monetary values cannot be determined. negative externality (also called external cost or external diseconomy) is an economic activity that imposes a negative effect on an unrelated third party. It can arise either during the production or the consumption of a good or service.
INTERNAL - Inside EXTERNAL - Outside. If you are referring to Marketing Terms, Internal and External has something to do with the SWOT Analysis. The Strength-Weakness-Opportunities-Threats Analysis. Internal has something to do with the Strenghts and Weaknesses that the company has. It means that they can be identified and analyze inside the company. That is the reason they are called Internal Factors. External Opportunities and Threats that are present in the companies in the environment are found on the outside. These are called External Factors.