Astudy shows that a new pesticide is safe for use on food crops.
the researcher who conducted the study works for the pesticide company.
what potential biase may effected the study?

You are given an electron micrograph of a bacterial cell. in the micrograph you can clearly see three thin layers of different densities surrounding the cell. based on the micrograph, you can infer that this cell is and would appear after application of the gram stain procedure. gram-negative / pink gram-positive / purple gram-positive / pink gram-negative / purple