As Laura Brennan researched her cervical cancer diagnosis, she had to evaluate scientific claims such as the ones below. Which of the following descriptions are based on real science and which are based on pseudoscience? Note that each target can accept more than one description or label. The list of claims is as follows:
1. HPV vaccine is effective in preventing cervical cancer.
2. Drinking alkaline water can cure cervical cancer.
3. Regular Pap smears can detect cervical cancer early.
4. Using essential oils can shrink cervical cancer tumors.
5. Getting regular exercise can reduce the risk of developing cervical cancer.