Top answers

How are the lungs adapted to increase the rate of diffusion? 3 Marks

Increase in surface area, which is provided by the many alveoli that are located at the end of the bronchioles. These can number in the thousands. The alveoli have a thin wall, one cell thick, so diffusion c...
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Answered by Louise C. • Biology tutor
6003 Views

How is the idea of the spinning wheel communicated in Schubert's 'Gretchen am Spinnrade'?

Firstly, Schubert emulates the spinning wheel through his use of incessant semiquaver motion in the right hand of the piano accompaniment. The pattern opens the piece and recurs throughout, with the initial ...
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Answered by Rachel H. • Music tutor
4129 Views

Introduction to a basic conversation in Spanish

Basic reading practise is a great way to introduce new students to learning Spanish. Not only does it develop the ability to pronounce various sounds, but it also develops confidence (essential to language l...
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Answered by Rhiannon E. • Spanish tutor
2126 Views

Solve the following simultaneous equation: 3x+y= 11 and 2x+y=8.

X= 3y= 2
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Answered by Lara D. • Maths tutor
4371 Views

Why are noble gases so unreactive?

This is due to the number of electrons in the outer shell of their atoms. Their outer shell is full, meaning it is difficult for them to give or take electrons.
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Answered by Lara D. • Chemistry tutor
30012 Views