Answer Happy

QUESTION 26 A group of doctors wanted to see if antiperspirant deodorant caused breast cancer. They identified 500 women who had breast cancer and 500 women who did not have breast cancer. All participants completed a survey about the personal hygiene habitats and deodorant use. What type of experimental designs are the doctors using? O randomized clinical trial O case-control epidemiological study O controlled experiment QUESTION 27 The following statements about water are true EXCEPT as ice malts, hydrogen bonds are broken Oice is denser than guld water the tandency of water molecules to stick together is referred to as cohesion