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Yes, if a diagram is relevant, always use them. For example if you are answering a questions of the different types of tectonic plate boundaries it would be helpful to sketch and briefly label each one to...

Alveoli have features that speed up the rate of diffusion so that gases can be exchanged quicly. They have a thin exchange surface - the alevolar epithelium is only one cell thick, which means there's a s...

Questions that contain sources are usually looking for you to pick out as much information as you can that gives you an idea as to what is going on. They can come in the forms of photographs, paintings, n...

The temperature of the earth is a balance between the heat it gets from the sun and the heat it radiates back out into space. Gases in the atmosphere absorb most of the heat that would normally be radiate...

Quotations and examples are key to wrting a good essay. It is often the case that short quotations consiting of only a few words can be much more effective in suppporting your point than long quoations of...