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.
10 most extreme places on Earth. The DPT or DTAP is an immunization or vaccine to protect against the diseases diphtheria, pertussis, and tetanus. Five doses are commonly given to children between the ages of two months to five years old.usty objects could cause tetanus. The DTaP vaccination protects against diphtheria, tetanus, and pertussis. A DPT vaccine. Children typically receive their final DPT dose before beginning kindergarten.