What does the term "menstrual cycle" specifically refer to?

Which can be an effective way to reduce stress? getting in the habit of doing things perfectly the first time engaging in a fun physical activity on a regular basis taking an antacid for a stress-based stomachache studying extra hard the night before a test

How could you find out if that advice is based in scientific evidence?

Which of the following statements concerning cancer and mutations is correct? a: cancer can only occur with a mutation in a somatic cell. b: usually, multiple mutations are required in different genes to cause cancer. c: none of the other answer options is correct. d: cancer can only occur with a mutation in a germ cell. e: usually, a single mutation is all that is required to cause cancer.