Question

after our solar system began to form, dust and gas combined into small bodies that formed the planets. what are these small bodies called?- dwarf planets- gas giant planets- planetesimals- terrestrial planets

Explanation:

During solar system formation, dust and gas clump into small, rocky/icy bodies that accrete to form planets. These precursor bodies are defined as planetesimals. Dwarf planets are fully formed small celestial bodies, gas giants and terrestrial planets are the final large planet types, not the initial small bodies.

Answer:

planetesimals