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Always start with planning. Even if there is little time, mind map briefly as many points that you could talk about. Ideally you need to write about at least five.Always start the essay with a brief intro...

Curved surfaces, providing a large surface areaThin, providing a short diffusion distance

This phenomenon is called the 'jerk reflex' and is controlled by an electrical pathway along the nerves in your body. Once the hot object makes contact or comes close to the skin receptors will pick up th...

Donepezil is an inhibitor of the enzyme acetylcholinesterase.
Acetylcholine is a neurotransmitter that diffuses across synapses, b...

Plants need three main nutrients to grow, which can be helpfully abbreviated as NPK: that's nitrates, phosphates and potassium. Many gardeners and farmers will apply these fertilisers to crops in order to...