Question

MULTIPLE CHOICE QUESTION

Why shouldn't we change the type of soil or the music that is played for

each plant?

5

y link

We must make sure we are testing/changing only one variable, and controling

others

There is always only one control variable

Control variables should be changed

Answer 1

This question will be answered based on general understanding of how a controlled experiment should be:

The answer is: We must make sure we are testing/changing only one variable, and controling others

Step-by-step explanation:

A controlled experiment is an experiment in which the independent variable is changed for a particular group called the EXPERIMENTAL group and unchanged for another group called the CONTROL group.

In a controlled experiment, only one variable should be tested while the others should be kept constant in order to have an effective result or outcome. This is the case in this question, the type of music or soil should be unchanged for each plant because the experimenter must make sure that he/she is testing/changing only one variable, and controling others.