This is a correct answer to the following question about Vitamin. Yes or no? Answer: Although these roles in assisting enzyme-substrate reactions are vitamins' best-known function, the other vitamin functions are equally important. Question: how many classes of vitamins
No

This is a correct answer to the following question about Help! (song). Yes or no? Answer: It was also released as a single, and was number one for three weeks in both the United States and the United Kingdom . Question: when was the song help written
No

Q: This is a correct answer to the following question about Cnidaria. Yes or no? Answer: Coral reefs , whose polyps are rich in endosymbiotic algae, support some of the world's most productive ecosystems , and protect vegetation in tidal zones and on shorelines from strong currents and tides. Question: what is phylum cnidaria
A: No

Question: This is a correct answer to the following question about European Union. Yes or no? Answer: A monetary union, the eurozone , was established in 1999 and is composed of 17 member states. Question: how many countries are member of the eu?
Answer: No

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This is a correct answer to the following question about HIV. Yes or no? Answer: Infection with HIV occurs by the transfer of blood , semen , vaginal fluid , pre-ejaculate , or breast milk . Question: What is caused by the human immunodeficiency virus?
**Answer**
No

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This is a correct answer to the following question about Skin. Yes or no? Answer: Skin of a different nature exists in amphibians , reptiles , and birds . Question: what is human skin made of
**Answer**
No