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The removal of cell waste

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…

Work it out. Animal nutrition

Remember what you have studied in this section and answer the questions: Is it possible to find a digestive system that does not use mechanical processes? And chemical processes? Explain your answer.…

Check. Changes in matter

List the differences between physical and chemical change. Give three examples of each.

Calculate. Forces and work

¿What is the efficiency (expressed as a percentage) of a machine that performs work of 1190 J and 1400 J for it consumption? η = %

Final self-evaluation T02 04 - Liberal revolutions and nationalist movem...

Match each definition with the correct concept: The separation of the Church and state. Jacobin law that controlled prices and salaries. Public figure during the Napoleonic period that governed the…

Describe. A working class home

Describe the worker's home. Compare it with the bourgeois home: size, plumbing, heat, furnishings.

The role of women in the Falange

The Women's Section of the Spanish Falange was run by Pilar Primo de Rivera, the sister of the party’s founder. The group's basic aim was to instil Falangist and national-syndicalist ideals in…

Find out more. Women in Spain today

Over the past 25 years, women's participation in Spain's political, social and working life has increased dramatically. The Constitution defends gender equality and condemns gender…

La literatura del Renacimiento