From the perspective of human time, very little changes on 'the surface of Earth. From the perspective of geologic time, the period from Earth's beginning more than 4.5 billion years ago to the pres• ent day, however, the surface of the planet is in constant motion, being reshaped over and over. The constructive and destru…
In the technological world of the twenty-first century, few peo• ple can truly imagine the challenges faced by prehistoric people as they tried to cope with their natural environment. Thousands of years ago life was a daily struggle to find, store, and cook food, stay warm and clothed, and generally …
Alternative Energy offers readers comprehensive and easy-to-use information on the development of alternative energy sources.
• Although the set focuses on new or emerging energy sources, such as geothermal power and solar energy, it also discusses existing energy sources such as those that rely on fossil fuels. Each volume begins wi…
Alternative Energy offers readers comprehensive and easy-to-use information on the development of alternative energy sources. Although the set focuses on new or emerging energy sources, such as geothermal power and solar energy, it also discusses existing energy sources such as those that rely on fossil fuels. Each volume begins with a gen…
Ceara, estado ("state") of Northeastern Brazil. It is bounded on the north by the Atlantic Ocean, on the east by the Atlantic and states of Rio Grande do Norte and Paraiba, on The South by the state of Pernambuco and on the west by the state of Piaui. It covers an area of 57,150 square miles (148,016 square km). The capital, Fortaleza, is the princi…
In articles and maps indicating disputed geopolitical. Boundaries and territories, the attribution of sovereignty or administrative subordination to any specific area does not imply recognition of the status claimed by an aministering power.
The tittles of entries are arranged according to the forms commonly found in indexes and dictionaries, with some specials conventions. entry titiles for certain physical features, institutions, structures, events, and concepts are ordinarily inverted to place the substantive word first. Thus, the bay of bengal is entered as Bengal, Bay of; the Bank …
Islam is major world religion belonging to the semitic family; it was promulgated by the prohpet Muhammad in Arabia in the 7th century AD. The arabic term religious idea of islam that the believer (call a muslim, from the active particle of islam) accepts 'surrender to the will of Allah (Arabic:God). Allah is viewed as the sole God-Creator, sustaine…