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Describe the structure of the human gas exchange system and explain how we breath in and out.

The human gas exchange system includes the trachea, the bronchioles and the alveoli. During inhalation (breathing in) the diaphragm contracts and the external intercostal muscles contract. This increases the...
HI
Answered by Hajira I. • Biology tutor
24443 Views

Compare attitudes to suffering in poems from Plath’s Ariel.

Throughout Sylvia Plath’s poetry, various attitudes to suffering are presented. Most of her poetry encompasses a strong urge to escape the suffering unavoidably present in life by dying, however some aspects...
EW
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Analysez le role et l’importance de la religion dans ‘L’étranger’

Dans le roman ‘L’étranger,’ Camus utilise le thème de la religion pour illustre comment Meursault est un étranger dans sa propre société et comment la religion cause son chute, et donc, son mort. Pour cette ...
ET
Answered by Ella T. • French tutor
18776 Views

What is a reflex arc and why is it important?

A reflex arc is made up of a receptor (which detects a stimulus), a sensory neurone , a relay neurone , a motor neurone and an effector (which brings about a response). The neurones are not joined to each ot...
JB
Answered by Janella B. • Biology tutor
5270 Views

What is price elasticity of demand?

Price elasticity of demand (PED) shows by how much demand will increase or decrease with a change in price where 0-1 represents low PED and >1 means a high PED.If a product has a low PED (e.g. 0.5) then a...
JW
2206 Views