because every aspect is controlled except the lid either being open or closed and this is neither changed through out the experiment.
the control was the open jar with meat
That things aren't spontaneously generated.
controlled experiment
experiment
people believed on spontaneous generation and now they don't after his discovery!
the answer is a experiment that is controlled
It is called a controlled experiment.
A controlled experiment is better than a none controlled experiment because you can control one of them and the other you can't. Science is a really fun subject.
An investigation in science that is controlled is an experiment. The group within the experiment that is controlled is the control group.
a controlled group is like an idea but an experiment that is controlled cannot be changed.
A controlled experiment is an experiment where there are limited or no variables other than the one you are testing for.
An investigation in science that is controlled is an experiment. The group within the experiment that is controlled is the control group.