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Firstly, blood from the IVC (inferior vena cava), carrying deoxygenated blood from most of the body, after oxygen has been removed from the blood, diffused into the tissues and used for respiration, enter...

Stage 1: Identify that the equation is a quadratic and that the question is asking you to find out which values 'x' fit this equation. Quadratics can be written algebraically in the form ax²+bx...

When we have 2 sides of a right angled triangle, we can use Pythagoras' Theorem to find the third missing side. This theorem states that if we label the hypotenuse (the side opposite the right angle) as <...

Answering any examination style question may appear to be a daunting task, however if you take time to carefully plan an essay before beginning to write, you will immediately notice that you are producing...

Magnesium oxide has a giant 3D lattice structure formed by strong electrostatic forces of attraction between the positively charged magnesium ions and the negatively charged oxygen ions. These ionic bonds...