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Why is the sky blue?

Light from the sun is white. As it passes through the Earth's atmosphere, the different wavelengths of white light (i.e. the visible spectrum of colours) are scattered by gas and dust particles. Colours with...
JR
Answered by Josie R. • Physics tutor
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How do you conjugate the present subjunctive mode?

For regular verbs, these conjugations are relatively easy - the way I remember it is that you switch the endings of AR verbs with those of ER/IR verbs in the indicative. e.g. present indicative com er : yo c...
AM
Answered by Ashley M. • Spanish tutor
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Solve the equation ((2x+3)/(x-4))-((2x-8)/(2x+1)) = 1 to 2 decimal places.

First, multiply by the denominators making sure to multiply on both sides of the equation and the other fraction. You should start this by multiplying through by one of the denominators and then by the other...
HC
Answered by Harry C. • Maths tutor
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What is the definition of structural isomerism and what are the different types?

Structural Isomerism: Molecules with same molecular formula and different structural formula. Different types: Positional, chain, functional group
EA
Answered by Ellie A. • Chemistry tutor
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How are the dead presented in this anthology? Refer to two or three texts in your answer. (World War One Literature)

The dead are a central focus for war poetry and the notion of death is trivialised throughout the poems in this anthology. Poems such as 'The Soldier' by Rupert Brooke glorify the dead and display the afterl...
RD
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