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As we are working with an inequality we have to pay attention every time to the symbol, in this case less <, that rules the inequality. The first step to solve it, it is the expansion of the LHS, so we...

Oxygen enters the nose/mouth along the trachea, bronchi, bronchioles and finally into the alveoli.The exchange of gases occurs between the alveoli and blood in the capillaries that supply the lungs. Capil...

For your GCSE, you need to know that there are three main differences between plant and animal cells:Plant cells have a cellulose cell wall while animal cells do not.Plant cells have chlo...

Relative frequency is the number of times an event occurs divided by the total number of trials conducted.
So for example, suppose you toss a coin 15 times, and it lands on heads 8 times and tails 7...

Huntington ultimately ascribes Islam the main source of conflict with the West in his ‘Clash of Civilisations’ movement. In recent years this clash has been witnessed in the rise of political Islam, chara...