Definition of leader: A person or thing that holds a dominant or superior position within its field, and is able to exercise a high degree of control or influence over others. See also leadership. She wanted to be the leader of the group, because she thought that she had the best ideas out of anybody.
If so, chances are you already know what terracotta is. Terracotta is a clay-like earthenware ceramic that can be either glazed or unglazed. In addition to being used for flower pots, terracotta is also often used for water and sewage pipes, bricks and sculptures. The word âterracotta comes from the Italian words for âbaked earth..
Limestone is used as a filler in a variety of products, including paper, plastic, and paint. The purest limestone is even used in foods and medicines such as breakfast cereals and calcium pills. Limestone is also the raw material for making lime (CaO) that is used to treat soils, purify water, and smelt copper.lthough limestone is common in many parts of the United States, it is critically absent from some. Limestone is used to produce Portland cement, as aggregate in concrete and asphalt, and in an enormous array of other products, making it a truly versatile commodity.