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A factor in an experiment that can change is called a variable. Variables are used in experiments to test a hypothesis, and someone will manipulate the variable, while keeping something else the same, a control, in order to see how the variables react in comparison with a control.
What a person intends to do in an experiment depends on what the experiment is. Someone will need to know what the exact experiment is to know what they would do in it.
The results of an experiment are called your data.
An experiment in which all variables stay the same is called a "controlled experiment".
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You can find someone else to experiment...
When someone is genetically identical to someone else they are called twins, triplets etc.
I really dont know ask someone else
Someone who picks on someone else is called a bully. They are not nice people.
When someone else writes about someone who is deceased, it is called a biography.
Envious.
It could be the experimenter, someone else (in a double blind experiment) or nobody.
AutoBiography
• Someone who interferes in someone else's life is called a 'meddler.' Obviously.....
That is known as projection. It is a defense mechanism where an individual attributes their own emotions or traits onto another person or object.
a babysitter