A mutation of a sigma factor in a bacterium would most likely affect a. the rate at which translation occurs. b. the frequency of errors in transcription. c. the types of modifications done to RNA during processing. d. the rate at which transcription elongation occurs. e. the rate at which transcription is initiate .

idk and i also need to know where are those bio brainy acts lol

i took a test for bio that had this question and these were the correct answers, not sure if this is any now lol

the nervous system and the muscular system work together.  

sweat reaches the surface of the skin and evaporates into the air.

muscles underneath the skin relax, causing hair on the skin to lay flat.