Snowflake unlikely that any two snowflakes are alike due to the estimated 10 (10 quintillion) water molecules which make up a typical snowflake, which grow at different rates and in different patterns depending on the changing temperature and humidity within the atmosphere that the snowflake falls through on its way to the ground. Snowflakes that look identical, but may vary at the molecular level, have been grown under controlled conditions. Although snowflakes are never completely symmetrical, a non-aggregated snowflake often grows so as to exhibit an approximation of six-fold radial symmetry. The symmetry gets started due to the hexagonal crystalline structure
Front and back ends end and a back end. The "front" is an abstraction, simplifying the underlying component by providing a user-friendly interface, while the "back" usually handles business logic and data storage. In telecommunication, the "front" can be considered a device or service, while the "back" is the infrastructure that supports provision of service. A rule of thumb is that the front (or "client") side is any component manipulated by the user. The server-side (or "back end") code usually resides on the server, often far removed physically from the user. Another way to understand the difference between the two is to understand the