A) a common ancestor
Homologous structures are structures that are similar in related organisms. There is a basic pattern of bones which can be inherited from a common ancestor
Weathering causes the granite to break down into small particles - sand. The sand becomes buried and compacts into sandstone. If the sandstone continues to be buried and comes into close contact with high heat, such as magma, it can be turned into quartzite.
First, ISA means Industry Standard Architecture. it is a standard bus architecture that is associated with the IBM AT motherboard. The Industry Standard Architecture has three key functions. first is it is informative, the second is it is directional and the last one is it is locational.
