A lab or a demonstration.
Yes 99.99% of the time,controls are very necessasry.If you are performing an experiment testing some variable, say (X) , you need to perform a control where everything is the same as the experiment conditions including your (X) variable your testing in the experiment. Therefore, the only difference between your control and your experiment is the variable your testing.Since the variable in your control is kept constant, you can compare the result so the experiment (where the variable was varied) and your control (where the variable was kept constant).Since all other factors in both the control and experiment were the same, you can compare your results
When some thing stays the same.
When something is variable, it means it can and does change, sometimes a lot. A variable is a factor or condition in an experiment that can change. Some are changed by you, some are changed by other variables and some are kept the same by you.
nice,good job,sweet,awsome,
the answer to that question is the control group has nothing to do with the independent variable because a control group is some thing in your experiment that has not changed through out your experiment. And a independent variable is some thing in your experiment that you change through your experiment(s)
Some words that have the same meaning as "multiply" are increase, expand, and grow.
Ironically enough, the word "Mean" is the same as "Signify"
look
Gone
luckily, gratefully
astray
Attraction, allurement...
Rapid, speedy.
I know that one word that has the same meaning as describe/description would be depiction.
There are some contexts in which the words "may" or "might" have the same meaning as would.
passage opening entrance
own, have,borrowed,and word like that