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Como ya sabes, hoy en día hay muchos problemas medioambientales. ¿Qué haces en casa para proteger al medio ambiente? ¿Piensas que los ciudadanos son resonsables para la protección del medio ambiente, o sólamente los gobiernos y las grandes empresas?

En casa reciclamos, intentamos reducir la cantidad de electricidad y agua que usamos, y evitamos usar el coche siempre que podemos (entre otras cosas). Pienso que el cambio climático es uno de los problemas ...
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Answered by Lucy V. • Spanish tutor
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Describe the reactions that link glycolysis to the krebs cycle

Firstly, try to remember what the intermediate reaction was called (Link Reaction). Name this, as if the name was not stated in the first place in the question, the examiner is most likely looking for your k...
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Answered by Seth E. • Biology tutor
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What is the difference between Irrenaean and Augustinian theodicies?

Irrenaeus and Augustine both use free will to explain how an all-good, all-powerful God could allow evil in the world. Where they differ is in the role that free will plays. Irrenaeus' is a soul making theod...
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(C3 question). Find an expression for all stationary points on the curve y=sin(x)cos(x). How many such points are there and why?

Stationary points are points at which the gradient of the curve is zero. The gradient is given by dy/dx so we start by computing this using product rule to give us dy/dx=-sin 2 x+cos 2 x. Notice that this is...
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Answered by Tristan G. • Maths tutor
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(FP3 question). Integrate 1/sqrt(3-4x-x^2).

There are two stages to this integral. Stage 1: Notice that there is a quadratic inside a square root in the denominator. We wish to look for a substitution which will reduce this problem to a known integral...
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Answered by Tristan G. • Maths tutor
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