La sociedad del siglo XXI

6.1. Un tiempo de cambios El cambio social más importante de las últimas décadas ha sido la casi total desaparición, en el mundo industrializado, del campesinado (4,4% de la población activa). El…

Relatiu amb antecedent global

Relatiu amb antecedent global Oracions subordinades adjectives

El significado de las palabras

Libro de buen amor, del Arcipreste de Hita. [...]

Libro de buen amor, del Arcipreste de Hita. Coplas a la muerte de su padre, de Jorge Manrique La literatura en la edad media (II)

Check. Reproduction in living things

Remember what you have studied in this section and answer the questions: What is the purpose of reproduction? Explain the basic types of reproduction. What are the different stages in sexual…

Final Autoevaluation 4.04 - Animal reproduction

The following table shows how the weight of a litter of mice progresses after birth: How many days did the mice take to double their weight after birth? days. Calculate on approximately which day the…

Summaries - Interaction, adaptation and coordination in animals and plants

1. Interaction in animals Interaction is a function that allows living things to perceive information from the outside or from inside the organism and respond to changes that take place. The term…

Final Autoevaluation T07 04 - Energy inside the Earth

Choose the correct word to complete the sentence: Earthquakes caused by the friction of rock masses are called... Tectonic earthquakes are of magnitude... The frequency of volcanic earthquakes is... The…

Think about it. Forces in everyday life

Remember what you have studied in this section and answer the questions: Is a plane travelling at constant speed in equilibrium? What about a plane which is accelerating? Discuss. What is the magnitude…

Describe. Growth of urban population

Describe the trend in population growth: 1851-1911.