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Self-assessment T01 06 - Our planet Earth
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Are these sentences true or false? The process of erosion takes places before the process of weathering. Sedimentation is the process of depositing materials. Transportation takes place after the…
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Introduction - Spain's population
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Spain has more than 46 million inhabitants. It is the fifth most populous country in the European Union. The distribution of the population in Spain is very uneven. Half of the population live in only…
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Oral hygiene
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Microbes live inside our mouth and consume the food left between our teeth. These microbes manufacture substances that produce cavities in our teeth. This is called tooth decay. To avoid tooth decay, it…
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Bone and joint injuries
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Violent movements, strong blows or excessive tension can injure our bones and joints. The most common injuries are fractures, sprains and dislocations. Fractures When a bone is put under too much…
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Answer. Electrical current
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How can objects become electrically charged? What is electrical current? What is needed to create the electrical current? What is a conductor? And an insulator? Name the parts of an electrical circuit.…
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Introduction - Light and sound
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We perceive most of the things around us because we can see or hear them. Most objects do not have their own light. We see them because they are illuminated by light from natural and artificial sources,…
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Autoavaliación 06 - Relevo e ríos de Galicia
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Responde estas cuestións sobre os ríos de Galicia: Cales son os principais ríos de Galicia? Como é o caudal dos ríos galegos? Que río percorre Galicia de Nordés a Sueste? Cal dos seguintes ríos…
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Introdución - A época dos castelos
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No ano 711 un exército de musulmáns do Norte de África conquistou case toda a Península Ibérica, e creou Al-Andalus. De alí a pouco, no Norte da Península xurdiron uns pequenos reinos cristiáns…
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Observa. O aparello reprodutor feminino e masculino
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Observa os debuxos dos aparellos reprodutores feminino e masculino. Cales son os órganos do aparello reprodutor feminino? E os órganos principais do masculino? Que dous órganos se representaron xunto…
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Responde. O desenvolvemento e o coidado das crías
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Lembra o que traballaches neste apartado e responde: Cita dous exemplos de animais que cheguen a adultos por desenvolvemento directo e dous de desenvolvemento indirecto. En que animal adulto se…
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