Learn. Ways to save energy - Obtaining and using energy

Ways to save energy Measures for saving energy are the responsibility of both individuals and society in general. This page shows you some of the ways to save energy. To save energy we must avoid Using…

Final Autoevaluation T12 06 - Waves. Light and sound

A train that is 2km away whistles. How long does the sound take to reach our ears through the air? And through a steel railway track? t = segundos.

True/false. Bourgeoisie and workers

Are the following sentences true or false?: The bourgeoisie became the ruling class, many of whom owned property and factories. The conditions of the petty bourgeoisie were not much better than those of…

The return to absolutism

I do not only lack allegiance to the Constitution and any decree of the Cortes (...), but I also declare the Constitution and such decrees void and without value, now and at any time, as if such acts…

Final evaluation T04 06 - Spain in the 19th century: building a liberal ...

Why was the First Republic proclaimed? What new organisation of the state did it propose?

The Bolshevik Revolution and the Civil War

6.1. The workers' October revolution of 1917 On 25th October 1917, the Bolsheviks, supported by the Soviets and their militias (the Red Guards), revolted against the government and threw them out of…

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Paisajes

La expresiоn corporal: coreografía y puesta en escena

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Un poco de historia. El primer libro de álgebra

Hacia el año 825, el matemático Al-Jwarizmi, que vivía en Bagdad, escribió un tratado llamado Al-Jabr w'al muqabalah, que se considera el primer libro de álgebra.