What are controlled and uncontrolled variables in an mold experiment using milk bread bananas cheese?

Controlled variables:

* Type of bread: Milk bread

* Type of fruit: Bananas

* Type of cheese: Cheddar cheese

* Amount of bread: 1 slice

* Amount of fruit: 1/2 banana

* Amount of cheese: 1 slice

* Temperature: Room temperature

* Time: 24 hours

Uncontrolled variables:

* Type of mold: There are many different types of mold, and it is impossible to control which type will grow on the bread.

* Humidity: The humidity level in the environment can affect the growth of mold.

* Airflow: The amount of airflow in the environment can affect the growth of mold.

* Light: The amount of light in the environment can affect the growth of mold.