The Pacific Time Zone includes places like California, Washington, Oregon, Nevada and Idaho in United States, British Columbia, Yukon, Tungsten, and Northwest territories in Canada, and Baja California in Mexico. The largest city in Pacific Time zone is the Los Angeles in California.
2.1 Definition of Research. research: NOUN: 1. a detailed study of a subject, especially in order to discover (new) information or reach a (new) understanding.  Cambridge University Press 2003. The word research is used to describe a number of similar and often overlapping activities involving a search for information. For example, each of the following activities involves such a search; but the differences are significant and worth examining.
Research is a tool by which they can test their own, and each others' theories, by using this antagonism to find an answer and advance knowledge. The purpose of research is really an ongoing process of correcting and refining hypotheses, which should lead to the acceptance of certain scientific truths. Whilst no scientific proof can be accepted as ultimate fact, rigorous testing ensures that proofs can become presumptions.