The crossword solution for the term 'Some Tiny Rods and Spheres' is BACTERIA. BACTERIA are single-celled microorganisms that can be found in virtually any environment on Earth. They come in a variety of shapes, including rods and spheres, and range in size from 0.2 to 10 micrometers. BACTERIA play an important role in the environment, as they are essential for the decomposition of organic matter and the cycling of nutrients.