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¿Cuales son los problemas principales del turismo en Andalucía hoy en día?

Con respecto a una región tan popular como Andalucía, algunos problemas son inevitables. Por ejemplo, durante ciertos periodos del año los turistas superan en número los autóctonos y eso conlleva peligros cu...
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Answered by Thomas W. • Spanish tutor
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During the cardiac cycle , there is a delay between the excitation of the atria and excitation of the ventricles. Explain how this is achieved and why this delay is essential.

Excitation from SAN (sino-atrial node) spreads across atria , causing them to contract first. The excitation is conducted to the AV (atrio-ventricular) node, which introduces a 0.12s delay . This refractory ...
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Answered by Jane E. • Biology tutor
15763 Views

Find, without using a calculator, integral of 1/sqrt(15+2x-x^2) dx, between 3 and 5, giving your answer as a multiple of pi

To get the denominator into something usable, you have to complete the square so you have it in one of the forms you can use a trig or hyperbolic substitution for. The minus sign in front of the x2 means we'...
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5310 Views

How do I analyse unseen poetry?

When you first read a poem, it's important to put on your detective hat! It's almost like arriving at a crime scene for the first time.To be a great detective you need to be prepared! Bring a pen and highlig...
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6177 Views

Describe how a synapse works

- An electrical impulse travels down the axon of a pre-synaptic neurone . - The movement of this electrical impulse initiates the release of chemical messengers which are called neurotransmitters . - The neu...
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Answered by Saira I. • Biology tutor
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