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- Música rock
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- Letras K
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Learn. The different types of respiration - Animal nutrition
EduBook Organización
- 2183 visitas
Diffusion In unicellular organisms, like the amoeba, respiratory gases are exchanged across the whole surface of the body. These gases then cross the cell membranes by diffusion. Tracheal respiration…
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The removal of cell waste
EduBook Organización
- 2175 visitas
4.1. What does excretion consist of? Cell activity produces waste products like carbon dioxide or urea. These substances are toxic for the organism if they accumulate. The function of excretion is…
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Learn. How to find out the age of a human foetus
EduBook Organización
- 2174 visitas
The approximate age of a foetus can be determined by scanning the mother's abdomen with an ultrasound machine. This method is usually used at a clinic to check that a pregnancy is progressing well…
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Match. Metamorphic rocks
EduBook Organización
- 2179 visitas
Match each type of metamorphic rock with the rock from which it originates: Quartzite Gneiss Marble Dolomitic marble Chalk
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Write names and formulas. Matter and its properties
EduBook Organización
- 2170 visitas
Escribe las formulas correspondientes sin subíndice. Por ejemplo CO2 se escribe CO2. Remember what you have learnt about the formulas and names of binary compounds and do the following activities: Give…
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Calculate. Pressure
EduBook Organización
- 2178 visitas
Calculate the pressure exerted on the floor a box of mass 150 kg whose base has an area of 3 m2: P = Pa
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Talk about it. Obtaining and using energy
EduBook Organización
- 2179 visitas
Look at the pictures and answer the questions: Is the Sun a source of energy? And a bonfire? List five sources of energy. Which of them could run out? Will we always have oil to use? Name a source of…
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Talk about it. Heat and temperature
EduBook Organización
- 2172 visitas
Look at the pictures and answer the questions: Give the name of five heat sources. What type of energy transforms into heat in a wood fire? How does a radiator work? Which fuel is usually used in…
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Look. Main periods of the 18th century
EduBook Organización
- 2173 visitas
Look at the timeline. Which dynasty began to reign in Spain in the 18th century? Name the monarchs.
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Nationalist movements
EduBook Organización
- 1 lo usan
- 1986 visitas
The Napoleonic expansion and the Holy Alliance provoked a surge in nationalist sentiment in many European countries. In these territories, the liberal revolutions were accompanied by nationalist…