Vitamins A, D, E, and K are fat-soluble. B vitamins and vitamin C, on the other hand, are water-soluble. Vitamin A. Vitamin A is found in many yellow-colored fruits and vegetables. Good sources include: sweet potatoes; winter squash; carrots; dark leafy-green vegetables; fatty animal tissue, such as liver or fish
A 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.
Asymmetric information â adverse selection, moral hazard, principal-agent problem The Khan Academy (for instance) has a useful animated clip which demonstrates the âtragedy of the commonsâ: https://www.khanacademy.org/economics-finance-domain/microeconomics/consumer-producer-surplus/externalities-topic/v/tragedy-of-the-commons This article from The Guardian considers positive externalities generated by the emergence of Google: http://www.theguardian.com/technology/2013/jan/08/why ...