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.
There is an important conceptual distinction between a demerit good and a negative externality. A negative externality occurs when the consumption of a good has measurable negative consequences on others who do not consume the good themselves. Pollution (due, for example, to automobile use) is the canonical example of a negative externality.