"A un olmo seco", Campos de Castilla, de Antonio Machado. [...]

"A un olmo seco", Campos de Castilla, de Antonio Machado. El sí de las niñas, de Leonardo Fernández Los géneros literarios

The transport of substances in plants

2.1. Plant transport systems Plants have two transport systems, one for each type of sap that is transported: Xylem. This system transports raw sap (water and mineral salts) from the root up the stem to…

Complete. The nervous system

Look at the first chart and complete it with the parts of the nervous system.

Did you now? The periodic table and chemical formulas

At the beginning of the nineteenth century, the English scientist John Dalton (1766-1844) established a series of symbols to represent the chemical elements known at that time. His series included the…

Look. French cartoon

Look at the cartoon and answer the questions: Analyse the cartoon with a partner. The figure on the left is creating an 'electrical spark': What does the spark represent? Which monarchs are…

Final evaluation T04 07 - Spain in the 19th century: building a liberal ...

Explain why the Republican experiment failed.

Speaking bank

Profesiones

Polinomios. Actividad 3

Añade términos a los polinomios siguientes de ma­nera que resulten polinomios completos: 13x2 – 6    →   x4 – 2x3 + 3x2 – 6    →   x3 + x2 + x    →  

Ecuaciones e identidades. Actividad 4

Analiza cómo debe ser la solución de la ecuación ax = b según a y b sean positivos, negativos o cero.