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Biology AQA Past Paper (2015) - Unit 03 (Higher). Describe how the brain monitors body temperature.

The hypothalamus is the processing centre in the brain that controls body temperature (constant temperature of 37ºC approx.). It triggers changes to effectors, such as sweat glands and muscles controlling bo...
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Answered by Diego M. • Biology tutor
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Biology AQA Past Paper (2015) - Topic 7. Ecology: What is eutrophication?

Eutrophication is an enrichment of water by nutrient salts that causes structural changes to the ecosystem such as: increased production of algae and aquatic plants (algal blooms), depletion of fish species,...
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Answered by Diego M. • Biology tutor
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Difference between "ser" and "estar"

This is one of the main questions asked by Spanish learners. "Ser" is used to talk about permanent or lasting attributes; in other words, how and who you are (identity and intrinsic traits). The ac...
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Answered by Diego M. • Spanish tutor
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Prepare for essay writing. Example: June 2015 - AQA: Unit 03 - Question sample. Analiza las ventajas y los problemas de vivir en la región que has estudiado. ¿Qué se podría hacer para mejorar la vida de sus ciudadanos?

The clue for an outstanding essay is its Funnel structure. With a widespread introduction, followed by a deeper body (formed by specific study cases) and ending with a widespread conclusion, which should ans...
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Answered by Diego M. • Spanish tutor
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"Othello is not a typical example of a tragic hero." Discuss.

On the whole, Othello’s character and his tragic development are consistent with the Greek notions of the tragic hero. The first act of the play sees Othello in a high-ranking social sphere, a well-respected...
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