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Actualmente, los capitales financieros se mueven de un país a otro, de manera que existe una interdependencia entre la economía de distintos países. Los centros de poder de la economía mundial son…

Evaluación final T11 01 - La economía española

¿Cuáles son los cultivos más importantes de España?

Evaluación final T15 04 - Los fenómenos migratorios

¿Qué rutas distintas siguen las migraciones hoy en día?

Investiga. Las mujeres y la primera guerra mundial

La guerra otorgó a las mujeres un nuevo papel en la sociedad. Para colaborar con el esfuerzo bélico, empezaron a trabajar en las fábricas de armamento, en los hospitales, en la conducción de…

El léxico español

Temperature and insect growth

The body temperature of an insect varies according to the temperature of its surroundings. This is why insects grow more quickly in summer and more slowly in autumn and winter. Each species has its own…

Think about it. Trophic relationships in ecosystems

Remember what you have studied in this section and answer the questions: Are feeding relationships intraspecific or interspecific? Explain your answer. Why can there only be four or five trophic levels?…

Learn. Risks from volcanoes - Energy inside the Earth

Volcanic eruptions can cause loss of human life and material damage. This can be because of the material ejected from the volcano or as a consequence of the seismic activity which usually accompanies…

Internal geodynamics and surface relief

The forces inside the Earth cause mountain chains to form They also deform rocks and form folds, or break rocks and cause geological faults or joints. 6.1. Mountain ranges Mountain ranges are chains of…

Calculate. Matter and its properties (2)

Calculate the mass of water produced when 20 g of hydrogen reacts completely with 160 g of oxygen. g of water.