Investiga. El paisaje urbano

Si quieres saber más sobre el paisaje urbano, realiza una visita virtual a este sitio web: Explica las diferencias existentes entre el paisaje característico de la ciudad europea y el modelo…

Sabías que...

Uno de los factores que más influyen en la inmigración, después de buscar una mejora económica y de su calidad de vida, es conseguir un futuro mejor para los hijos. En España todos los niños y…

La evolución de la sociedad española

6.1. Los cambios demográficos En las últimas décadas se ha producido en España un notable descenso de la tasa de natalidad (10,5‰ en 2010) y un retraso en la edad de matrimonio y en la de…

Historias de cronopios y de famas, de Julio Cortázar

Historias de cronopios y de famas, de Julio Cortázar El texto

Oracions subordinades adjectives

Stages in the germination of a seed

Which organ becomes visible on the 4th day? Which organ is formed on the 6th day? At which point does the plant come to the surface? What day does this happen on? Why have the cotyledons reduced in size…

Classify. Interaction in animals

Indicate what type of stimulus is taking place in each case: physical or chemical. Sound: volume, pitch. Touch: pressure, intensity. Smell: different compounds, intensity. Vision: colour, shape,…

Think about it. The responses of plants

Remember what you have studied in this section and answer the questions: Discuss whether a plant would respond to light if the tips of the stem were cut off. Explain why poinsettias are typical…

How are folds formed?

For a rock to bend without breaking, certain conditions are necessary during the process of deformation: The rock must be under great pressure and at a very high temperature. This gives the rock a…

Motion

A moving object is any object which changes position over time. 1.1. The trajectory of motion A trajectory is a line which connects the different positions occupied by a moving object (figure 1). A…