Variation 1 in the rat population is becoming more common because it probably gives those rats an advantage in their environment. For example, if variation 1 helps the rats run faster or hide better from predators, they are more likely to survive and have babies. Over time, the babies will also have that helpful variation, so more and more rats will have variation 1!
Imagine+you+are+a+scientist+observing+a+wild+population+of+rats.+You+study+the+population+for+many+years.+Your+focus+is+counting+how+many+individuals+have+each+of+the+pictured+variations.+As+the+individuals+in+this+population+reproduce++those+with+variation+1+slowly+begin+to+outnumber+those+with+variation+Using+what+you+know+about+Natural+Selection%2C+explain+in+2+or+more+sentences+why+variation+1+is+becoming+more+common.+You+may+make+more+generally+or+you+may+make+specific+guesses+about+the+population+environment. Make it sound like a 5th grader
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