Yahoo España Búsqueda web

Search results

1. guides.nyu.edu › primary › primary-sourcesPrimary Sources - Primary Sources - Research Guides at New York...

   guides.nyu.edu › primary › primary-sources

   Hace 5 días · A primary source (also called original source) is a document, recording, artifact, or other source of information that was created at the time under study, usually by a source with direct personal knowledge of the events being described.

2. www.britannica.com › science › renewable-energyRenewable energy | Types, Advantages, & Facts | Britannica

   www.britannica.com › science › renewable-energy

   • En caché

   3 de sept. de 2024 · Renewable energy, usable energy derived from replenishable sources such as the Sun (solar energy), wind (wind power), rivers (hydroelectric power), hot springs (geothermal energy), tides (tidal power), and biomass (biofuels).

3. www.epa.gov › ghgemissions › global-greenhouse-gas-overviewGlobal Greenhouse Gas Overview | US EPA - U.S. Environmental...

   www.epa.gov › ghgemissions › global-greenhouse-gas-overview

   • En caché

   10 de sept. de 2024 · Global Emissions and Removals by Gas. At the global scale, the key greenhouse gases emitted by human activities are: Carbon dioxide (CO2): Fossil fuel use is the primary source of CO 2. CO 2 can also be emitted from the landscape through deforestation, land clearance for agriculture or development, and degradation of soils.

4. en.wikipedia.org › wiki › SulfurSulfur - Wikipedia

   en.wikipedia.org › wiki › Sulfur

   • En caché

   Hace 4 días · In recent times, the main source of sulfur has become petroleum and natural gas. This is due to the requirement to remove sulfur from fuels in order to prevent acid rain , and has resulted in a surplus of sulfur.

5. mclennan.libguides.com › sources › overviewResearch Guides: Identify Types of Sources: Overview of Sources

   mclennan.libguides.com › sources › overview

   5 de sept. de 2024 · These classes are known as primary, secondary, and tertiary sources. A primary source is created by someone who experiences an event, a place, or who makes a discovery or creates something. It is also a source that contains direct, firsthand knowledge from such a person.

6. en.wikipedia.org › wiki › GlucoseGlucose - Wikipedia

   en.wikipedia.org › wiki › Glucose

   • En caché

   Hace 6 días · In energy metabolism, glucose is the most important source of energy in all organisms. Glucose for metabolism is stored as a polymer, in plants mainly as amylose and amylopectin, and in animals as glycogen. Glucose circulates in the blood of animals as blood sugar.

7. www.britannica.com › topic › IslamIslam | Religion, Beliefs, Practices, & Facts | Britannica

   www.britannica.com › topic › Islam

   • En caché

   Hace 3 días · Sources of Islamic doctrinal and social views. Islamic doctrine, law, and thinking in general are based upon four sources, or fundamental principles : (1) the Qurʾān, (2) the Sunnah (“Traditions”), (3) ijmāʿ (“consensus”), and (4) ijtihād (“individual thought”).