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!).
The review involved trials on beta-carotene, vitamin A, vitamin C, vitamin E and selenium. It says in-depth analysis of the different trials does not support the idea that vitamins extend lifespan. 'Even more, beta-carotene, vitamin A, and vitamin E seem to increase mortality,' says the review.