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Explain the process of photosynthesis in plants.

Photosynthesis is a process by which plants produce energy for its survival. It follows a very simple chemical reaction:carbon dioxide + water (+sunlight) => glucose (energy) + oxygen. Carbon dioxide c...

Answered by Mayur P. • Biology tutor

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Explain how stacks and stumps form

Stacks and stumps form when waves erode a weakness in a headland using abrasion or attrition. The crack widens until a cave is formed. Waves continue to erode the back of the cave until eventually it push...

Answered by Jess R. • Geography tutor

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Sketch graphs of: i. x^2 + y^2 = 1, ii. x^3 + y^3 = 1, iii. x^100 + y^100 = 1, iv. x^99 + y^99 = 1. Any generalisations?

i. A circle of radius 1 centred on the origin.ii. No longer restricted to -1 <= x,y <= 1, so its a quarter circle, then it goes off to infinity towards the asymptote x = -y.iii. Restricted to that ...

Answered by Shreyas V. • Oxbridge Preparation tutor

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How successful was Edward IV’s management of finance?

Edward IV was ultimately successful in his management of finances, as he died solvent. However, this essay must consider Edward’s failure in consolidating power during his first reign as he was deposed in...

Answered by Miranda C. • History tutor

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Evaluate the integral \int \frac{x}{x tan(x) + 1} dx using integration by substitution, hence evaluate \int \frac{x}{x cot(x) - 1} dx.

(STEP I 2017, Q1i)For the first part, the hint u = x sin(x) + cos(x) is given. It can be seen that this is the denominator once the fraction is multiplied by cos(x) / cos(x). The answer is ln(x sin(x) + c...

Answered by Shreyas V. • STEP tutor

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