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I can describe how some scientists control variables and why some scientists do not.
Muuji qoraalka
Scientists who investigate materials often control, measure and change variables.
Control variables are variables that are kept the same throughout an investigation.
There are some types of investigations where some, but not all, variables can be controlled.
Astronomers make observations and look for patterns in their data, however, they cannot control variables in space.
The 21st century astronomer Maggie Aderin–Pocock makes her observations using instruments on satellites in space.
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