Anatomy of the foot. The foot is one of the most complex parts of the body. It is made up of 26 bones connected by many joints, muscles, tendons, and ligaments. The foot is susceptible to many stresses. Foot problems can cause pain, inflammation, or injury. These problems can result in limited movement and mobility.
Bricks and tiles. Bricks and tiles are made from clay minerals. When wet, the clay can be shaped, and then fired to make floor, wall, and roof tiles, as well as house bricks. Think about the properties of clay: Easy to shape when wet. Strong and rigid when fired. Impermeable when fired. A thermal insulator.
In many parts of the world, mud or clay are the main building materials. Clay is a type of soil that sticks together more strongly than most other types of soil. There are three main ways of building walls with mud and clay. One way to make a house of clay is simply to pile up the mud or wet clay with the hands, and flatten it into a wall shape. Often animal hair, straw and dung is mixed with the mud so that the fibres (stringy bits) help hold it together.