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AKs are known for their robustness and were made in huge numbers, so that they are ubiquitous in much of Asia and the Third World.The best of the Kalashnikov variants are the Valmets that were made in Finland, the Galils that were made in Israel, and the R4s that are made in South Africa.Scientists accept the theory of the continental drift today but didn’t accept it then because when Wegener first came up with the theory of the continental drift he suggeststed that continental rocks were stronger and lighter than seafloor rocks and that the seafloor rocks were like very thick tar....[tags: geographic evidence, theory of continental drift] - ...Equilibrium with the atmosphere therefore produces minute concentrations of dissolved argon in water.Water sample sizes range from 2 liters (if vacuum degassing is used) to 15 cubic meters (if the sample is to be boiled) (Clark & Fritz 1997).Anthracite coal is the highest of the metamorphic rank, in which the carbon content is between 92% and 98%.The term is applied to those varieties of coal which do not give off tarry or other hydrocarbon vapors when heated below their point of ignition.

Argon represents less than one percent of the total gases in the atmosphere.(coal) A hard, compact variety of mineral coal that has a high luster.It has the highest carbon count and contains the fewest impurities of all coals, despite its lower caloric content.The stability of the Earth is not at all what we think it is.Thinking about the rotational axis of the Earth, and possibly of what the Earth may become at a certain point in time, has a great influence on understanding all aspects of living things, either in the past, present, or future.

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