When more than one variable in an experiment is changed at a time, the scientist a. made a systematic error that needs to be corrected. b. cannot tell which change produced the results. c. cannot accurately measure both variables at the same time. d. needs to conduct more trials in order to get conclusive results.

Which of the following is a type of technology that can be used at a coal-burning power plant to remove both particulate matter and gases? bag filter catalytic converter cyclone electrostatic precipitator scrubber

Hey guys! this is not for school. i my dog gave birth a week ago and we are celebrating them today so i decided to give out a ton of points, a tnx and brainiest to whoever answers the following questions. 1. did you have a good day today. 2. do you like dogs (its okay if you don’t) 3. if you were an animal, what animal would you be? (i am just curious. i would be a unicorn.)

How has nathan price adapted to his situation in the congo in the poisonwood bible?