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.
Thomas Jefferson was the only person to serve one term as vice president [John Adams 1797-1801] and two terms as president, 1801 to 1809. In addition Jefferson was the only incumbent VP to run against an incumbent president. Martin Van Buren is the only person to serve one term in each capacity. He was vice president for Andrew Jackson, 1833 to 1837 and elected president from 1837-1841. Richard Nixon is the only person to serve two terms as Vice President and be elected to two terms as President.