70149
A protostar continues to grow by accretion of gas and dust from the molecular cloud , becoming a pre-main-sequence star as it reaches its final mass .
 pre-main-sequence star
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 pre-main-sequence star