The full quetion is:
Why are controls not needed in the arthropods experiment
A some experiments cannot have controls
B All experiments must use controls
C compare treatments to each other instead of to a control
D hypothesis is not falsifiable
The treatments in this experiment can be compared to each other instead of to a control.
Controls are not needed in the arthropods experiment described in the study guide because the purpose is to observe the natural behavior or characteristic of the arthropods in their environment without any manipulation or comparison with a control group. This type of observational study does not require controls to assess the behavior or traits being studied.
The treatments can be compared to each other instead of to a control
Controls are not needed in the arthropods experiment because the study does not involve comparing treatments or conditions. The purpose of the experiment is simply to observe and describe arthropods in a specific environment, rather than testing a hypothesis or comparing experimental groups. Controls are typically used when comparing treatments to ensure any observed effects are due to the treatment itself and not other factors.
The treatments can be compared to each other instead of to a control
The treatments can be compared to each other instead of to a control
The treatments can be compared to each other instead of to a control
The treatments can be compared to each other instead of to a control
DNA controls heredity, not proteins.
The treatments can be compared to each other instead of to a control
The treatments can be compared to each other instead of to a control
There is no set number, the number is dictated by the design of the experiment.
They set out to test a hypothesis by using experiments and controls. They then adjust the experiments and run the tests again until they either prove or disprove it.