During transcription what happens to the RNA polymerase if a repressor protein attaches to the operator

The answer would be abrasion.

A  reaction  in which  energy  is  released  to the surroundings is called an exothermic  reaction. in this type of  reaction  the enthalpy, or stored  chemical energy, is lower for the products than the reactants. when ammonium nitrate is dissolved in water,  energyis  absorbed  and the water cools.

Its actually d. it can make farmworkers sick