Because all animals belonging to Felidaeâs sister taxa, Viverridae, have long tails, scientists could infer that this character state represents the ancestral trait. Some domestic cats display a rosette pattern on their coats.
measurement system: The metric system of measurement. For a time, the international prototype metre and kilogram were based, for convenience, on the archive standards rather than directly on actual measurement of Earth.
Metric and Imperial units are units of measurements based on different initial standards. They include such things as length, weight (mass), time etc. The standard units are given, all other units in the system are derived from the standard units to ensure compatibility within the system.