Scales of Ecosystems. Ecosystems come in indefinite sizes. It can exist in a small area such as underneath a rock, a decaying tree trunk, or a pond in your village, or it can exist in large forms such as an entire rain forest. Technically, the Earth can be called a huge ecosystem.
Types and Examples of Foods. There are two types of vitamins: fat-soluble and water-soluble. Fat-soluble vitamins are stored in your fat cells, consequently requiring fat in order to be absorbed.Water-soluble vitamins are not stored in your body; therefore, they need to be replenished daily.ere is a list of vitamin types and some common food sources: The fat soluble vitamins: 1  Vitamin A-comes from orange colored fruits and vegetables; dark leafy greens, like kale. 2  Vitamin D-can be found in fortified milk and dairy products; cereals; (and of course sunshine!).
Excess of some vitamins, especially fat-soluble vitamins such as vitamin A, can be toxic. Vitamins are classified as either water-soluble or fat-soluble. In humans there are 13 vitamins: 4 fat-soluble (A, D, E, and K) and 9 water-soluble (8 B vitamins and vitamin C).