Top answers

Why is gas exchange in the lungs efficient?

Alveoli have a large surface area, allowing more oxygen and carbon dioxide molecules to diffuse across at one time.
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Answered by Christina P. • Biology tutor
3112 Views

What is the equation for respiration?

glucose + oxygen = carbon dioxide + water
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Answered by Christina P. • Biology tutor
4037 Views

Find the turning point of the graph y = x2^ + 3x − 10

the turning point of curve is when the gradient of the curve is 0. to find the gradient of the curve, we need to differentiate the curve.y = x 2 + 3x - 10dy/dx = 2x + 3gradient = 2x + 3 = 02x = -3x = -1.5now...
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Answered by Estella G. • Maths tutor
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How do you solve a quadratic equation? eg: x^2 + 2x - 8

Well, when solving quadratic equations we have two options, either A: factorize the equation and solve or B: Use the '-b' formula. Option A is usually a lot quicker but does require you to practice factorizi...
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Answered by Ahad K. • Maths tutor
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Compare and contrast the presentation of guilt in Shakespeare’s ‘Hamlet’, Hosseini’s ‘The Kite Runner’ and William’s ‘The Glass Menagerie’. To what extent is guilt presented as inescapable?

The theme of guilt is central to all three texts; Hamlet is fuelled by the protagonist's guilt at being unable to act and the weight of his knowledge, The Kite Runner follows Amir's search for redemption and...
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Answered by Amy T. • English tutor
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