All macromolecules start as small simple subunits of carbon called

i don't see a text, but i am gonna assume this *orbit* the curved path, usually elliptical, described by a planet, satellite, spaceship, etc., around a celestial body, as the sun.

metric time was an attempt to create a standard unit of time based off of 10, but it never took off an is not included in the metric system (si)