Bonnie wanted to give her mom a flower for Mother's Day. She decided to plant the flower in a pot first. When she went to the shed, she noticed that the label on the bag of potting soil was missing. Since there was not another bag, she decided to use it. When her mom watered the plant, the water stayed at the top of the pot, not draining out too. What kind of soil can Bonnie conclude was in the bag?