Q.1.
We control the controlled variables by keeping them...
Q.2.
In an ecology experiment, we must always use quadrats of the same...
Q.3.
In an experiment investigating the effect of acid concentration, which of these is a controlled variable?
Q.4.
In an experiment on the effect of temperature on germination of cress seeds, which of the following would be controlled variables?
Q.5.
What is a variable?
Q.6.
Control variables are...
Q.7.
During a drug trial, which of the following are controlled variables?
Q.8.
If we fail to control variables, the results from the experiment may not be...
Q.9.
A fair test is one where everything is the kept same except for the...
Q.10.
Unless we keep the controlled variables the same, the investigation will not be...