<span>the spiral arms of the milky way was made of: D. younger stars and gaseous nebulae
The spiral arms of the mily way was organized into four spiral arms, and since it was made of younger stars and gaseous nebulae, Spiral arms typically contain a higher density of interstellar gas and dust than the Galactic average as well as a greater concentration of star formation</span>
We select the symbol of '<' if we assume temporarily for 4x+3 12.
Assume temporarily for 4x+3 12, we select the symbol of '<' because the real equation is "4X+3>12" in which the symbol '>' is used. The symbol '>' is used to show the greater number and a smaller number. The pointed side shows that the number is smaller.
while on the other hand, the wider part shows that the number or value is greater than the other one so we can conclude that we select the symbol of '<' if we assume temporarily for 4x+3 12.
Learn more about equation here: brainly.com/question/2972832
Learn more: brainly.com/question/25905271
Answer:
three kinds of plate tectonic boundaries: divergent, convergent, and transform plate boundaries. A divergent boundary occurs when two tectonic plates move away from each other.
