The control group is the part of an experiment that does not receive the variable and is used for comparison.
Because the air freshener is being released out in to open, so it spreads everywhere.
Hope that helps :)
Answer AND Explanation:
Darwin describes natural selection as a process whereby nature selects those organisms that have favourable characteristics to be parents of the next generation. The individuals possessing the favourable traits are better suited to the prevailing environmental conditions. This enables them to stand a better chance to survive in the struggle for existence due to limited resources.
Answer: Option 1
Explanation: because I did it on my test and got it right
