Today, my classmate Wu Zihan and I did an experiment about the speed of bread mildew, or we could.

In order to write a paper, the experiment of bread failed on the fourth day.

The changes of two groups of bread in the first four days are as follows:

The first set of bread, the first time without a drop of water. Put some mold on the dry land.

On day 1, day 2 and day 3, there was no change, and an organ began to be released on day 4.

Smell. The second piece of bread was ten drops too much, and it stinks the next day, and so did the fourth day.

Tie a small white silk knot.

The second group of bread, the first piece of bread in the refrigerator, is almost tasteless.

However, it has never been moldy. The second fastest bread is dried in sunny places in the evening.

There was a bad smell on the table, and some dark green mold was produced on the fourth day.

But the reason for the failure was that the bread placed in the sun was scratched by the cat. The bread

It was also taken away.