Question

What happened to the yeast population after hour 10? why?

Answer 1

The waste produced by the yeast slows down the population growth.

Step-by-step explanation:

Some of the waste that is produced by the yeast cells is poisonous to it and causes the growth to slow down. It is also possible that the amount of sugar left is growing to be not sufficient enough, which means that the yeast is starting to reach over-population and will soon began decreasing.

Answer 2

Perhaps a combination of not as much sugar for the yeast to consume and poisonous wastes build up now sufficient to effect the yeast population.