La lengua en la sociedad

End-of-unit activities - Animal reproduction

Reproduction is the only vital function that is not needed to keep an individual alive. It ensures the continuation of the species. Although sexual reproduction is a universal characteristic of animals,…

Match. The basic function of living things

Indicate which basic function of living things is reflected in each of these cases: A wolf sniffs the trail of a boar. A cheetah eats a gazelle. A rabbit hears a noise and hides in the grass. Two big…

Write. Names and formulas (1)

Write the formula for each of these compounds: Nitrogen tribromide Sulphur dioxide Carbon tetrafluoride Lithium bromide

Complete. Concept map

Complete the concept map:

Calculate. Matter and its properties (1)

84 g of nitrogen reacts with hydrogen to form 102 g of ammonia. Calculate the mass of the hydrogen required for the reaction. g of hydrogen.

Final Autoevaluation T12 08 - Waves. Light and sound

Match the item to its characteristic of sound: 60 decibels   →    High pitched   →    A very loud sound   →    Piano   →    120 decibels   →    Bass…

Look. The British Parliament

Look at the illustration and indicate who attended the House of Commons. What role do you think each of them had? Discuss.

Initial evaluation T3 03 - The industrialisation of European societies

Complete this table with the characteristics of the two social classes of the capitalist system.

Find out more. The Sahara conflict

Spain's colony in the Sahara was very attractive to its neighbours, especially Morocco, owing to the region's wealth in terms of phosphates and fishing. In 1973 the Polisario Front was created,…