Hetch Hetchy Environmental Debates. Between 1908 and 1913, America witnessed its first national debate over environmental preservation when the growing city of San Francisco, California proposed building a dam in the Hetch Hetchy Valley to provide a steady water supply. The Hetch Hetchy Valley was within Yosemite National Park, however, and protected by the federal government.
Most puppies need at least three DAPP vaccines, two Bordetella vaccines, and one rabies vaccine during these visits to be protected for a full year. The next vaccine visit should occur approximately one year after the last puppy shots were given.ther vaccines are available but should only be considered under special circumstances. Often, protection against several diseases is offered in a single inoculation. For example, a DAPP vaccine protects against distemper, adenovirus, parvovirus and parainfluenza.
One of the most widely used vaccines around the world are DTaP and TDaP. âDTaPâ stands for âdiptheria,tetanus, and pertussisâ or whooping cough. âTDaP,â on the other hand, also stands for the same types of diseases being prevented. However, the latter is a booster vaccine. DTaP is given to children who are at the age of seven and below to prevent the major diseases that are listed. TDaP, on the other hand, is a booster vaccine.