Question

which is the first step in building a solar system from a solar nebula? a. an explosion disturbs the gas and dust in the nebula. b. matter accumulates. c. the nebula collapses. d. spinning matter increases in temperature.

Explanation:

The first step in the formation of a solar - system from a solar nebula is the disturbance of the gas and dust in the nebula, often caused by an explosion like a supernova. This disturbance starts the process of gravitational collapse.

Answer:

A. An explosion disturbs the gas and dust in the nebula.