Question

Choose the four variables that are most important to control in an experiment about the rate at which bread turns moldy. humidity time of day age of bread type of bread shape of bread height of observer type of shelf surface type of storage container

Answer 1

Humidity.

Age of bread.

Container.

Type of Bread.

Step-by-step explanation:

In order ti study and develop an experiment to calculate the rate at which bread turns moldy, we need to set proper variables that have to be relate with the subjects. They should be indicators of the study.

Answer 2

Humidity
Age of bread?
Type of storage container
Type of bread