A body cavity is any fluid-filled space in a multicellular organism other than those of vessels (such as blood vessels and lymph vessels). The term usually refers to the space located between an animal âs outer covering (epidermis), and the outer lining of the gut cavity, where internal organs develop.
They thought that the more jewelry they wore, the more attractive they would be to the gods. Men and women who had great wealth usually wore the most jewelry. Egyptians wore necklaces, bracelets, heavy neck collars, pendants, earrings, rings, and special buttons on their clothing.
First we specify a common property among things (this word will be defined later) and then we gather up all the things that have this common property. For example, the items you wear: shoes, socks, hat, shirt, pants, and so on. I'm sure you could come up with at least a hundred. This is known as a set.xample: Let A be all multiples of 4 and B be all multiples of 2. Well, we can't check every element in these sets, because they have an infinite number of elements. So we need to get an idea of what the elements look like in each, and then compare them.