Breeding seasons

Most mammals only reproduce at a certain time of the year. This is when the female reaches maximum sexual receptivity and is most attractive to the male. This season is called oestrus or heat and it…

Check. Test yourself

Remember what you have studied in this unit and answer the questions: Define ecosphere and biosphere. Note down the differences between them. What are decomposers? Give an example. [...]

Answer. Energy inside the Earth

Look at the picture and answer the questions. How is the Earth's internal energy evident in Yellowstone National Park? Why do geysers eject water intermittently? What is magma? Why is it so hot? Are…

Did you know?

If the lava is very hot, the gases can escape easily and eruptions are gentle. This is the case with Hawaiian volcanoes. If the lava is not so hot, the gases cannot escape easily and eruptions are more…

Check. Metamorphic rocks

Remember what you have studied in this section and answer the questions: How are metamorphic rocks formed? ➞ Metamorphic rocks are formed by... Where are metamorphic rocks formed? What characteristic…

Think about it. Waves

Remember what you have studied in this section and answer the questions: With a classmate, make a list of other objects that oscillate like a pendulum. Compare your list with the class. What is the…

Summaries - Spain under Franco (1939-1975)

1. Francoism: a military dictatorship Franco established a totalitarian political regime. He was personally in control of all power: legislative, executive and judicial. The new regime was strongly…

Analyse. The timeline of transition and democracy in Spain.

Analyse the timeline. When did the transition to democracy start? Which political parties have formed governments since then?

Final self-evaluation T15 02 - Art in the 20th century

Choose the correct answer: What was Bauhaus? What is the name of the school of art from the early 20th century who did not belong to any specific movement? What is Neo-Pop? What is the name of the type…

Los juegos y deportes tradicionales