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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 dif...

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 initi...

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 languag...

X= 3y= 2

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.