<span>The variables in this study would be the folic acid used (the independent variable) and the DNA formed through the implementation (the dependent variable). By changing the amount of folic acid used in the experiment, the DNA will possibly be changed in the microbes.</span>
Point-source pollution is easy to identify. As the name suggests, it comes from a single place
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In negative control, a gene is switched off when a regulatory protein binds to DNA and shuts down transcription.
6. strength
7.North, South
8. igneous