Hallucinogens are a diverse group of drugs that cause an alteration in perception, thought, or mood. A rather heterogeneous group, these compounds have different chemical structures, different mechanisms of action, and different adverse effects.allucinogens are a diverse group of drugs that cause an alteration in perception, thought, or mood. A rather heterogeneous group, these compounds have different chemical structures, different mechanisms of action, and different adverse effects.
Which US President served the shortest term in office? William Henry Harrison, 9th President ,who died in office on April 4, 1841.served the shortest term of any president: March 4 - April 4, 1841. He served 30 days, 12 hours, andâ¦ 30 minutes. He died of pneumonia. William Henry Harrison only held office for 32 days.
Franklin Delano Roosevelt (FDR) is the only us president in history that served more than two terms in office. In fact, he was elected to four full terms. Unfortunately, Roosevelt died during his fourth term, and the remainder was served by his vice president, Harry S Truman. Shortly after, in 1947, the 22 Amendment of the United States Constitution was passed. It stated that a president cannot serve more than 10 years or two consecutive terms in office.