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.
Confidence votes 20.7K. Grover Cleveland (March 18, 1837 - June 24, 1908) was both the 22nd and 24th President of the United States. Cleveland is the only President to serve two non-consecutive terms (1885-1889 and 1893-1897) and therefore is the only individual to be counted twice in the numbering of the presidents.residents who served two consecutive full terms were the following. George Washington Thomas Jefferson James Madison James Monroe Andrew Jackson Ulysses S. Grant â¦ Woodrow Wilson Dwight D. Eisenhower Ronald Reagan Bill Clinton George W. Bush Presidents who served one full term and only part of a second were these.