Final answer:
The small worlds of rock and ice that orbit the Kuiper Belt are known as Kuiper Belt objects (KBOs). Some of the largest KBOs, such as Eris, Makemake, and Haumea, are also classified as dwarf planets. The Kuiper Belt is a large area of space beyond Neptune that is the source of many comets.
Step-by-step explanation:
The small worlds of rock and ice that orbit the Kuiper Belt are known as Kuiper belt objects (KBOs). These KBOs are made up of ice-and-rock planetesimals, which are remnants of the building blocks of the planets. Some of the largest KBOs, such as Eris, Makemake, and Haumea, are also classified as dwarf planets.
The Kuiper Belt is a large area of space beyond Neptune that is also the source of many comets. Astronomers have discovered over a thousand Kuiper belt objects, with an estimated total number of more than 100,000 objects larger than 100 kilometers in diameter.