<em>Answer:</em>
Mutations in DNA that do not have an observable effect on the organism's phenotype.
<em>Method:</em>
Search Engine
"With its systematic approach, the scientific method has proven useful in shaping sociological studies. The scientific method provides a systematic, organized series of steps<span> that help ensure objectivity and consistency in exploring a social problem. They provide the means for accuracy, reliability, and validity."
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https://courses.lumenlearning.com/alamo-sociology/chapter/the-scientific-method/
</span>
Explanation:
1.
2.
5.
I'm pretty sure 2 and 5 are right, but I'm not 100% on 1.
Have a nice day!
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<span>phagocytic cell</span>
