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Identify the ideal properties a surface should have for efficient gas exchange

In order for efficient gas exchange to take place, an exchange surface, such as the alveoli in the lungs, should have the following: a large surface area to volume ratio, so that diffusion can occur at a qui...
Answered by • Biology tutor
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Explore how Ted Hughes presents the natural world in 'The Thought-Fox'.

Ted Hughes is a poet whose work is very often concerned with the natural world and the creatures that inhabit it. This focus is seen from the very start of his career, with his 1957 anthology The Hawk in the...
Answered by • English Literature tutor
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Evaluate the idea that British Standard English is superior to other varieties of English used around the world

Fundamentally, this idea that British standard English as 'superior' is inherently flawed despite the quantity of theories, namely Kachru and Strevens, who imply that the root of English can be traced back t...
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Answered by Lizzie M. • English tutor
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Explain the differences between the Agentic State and the Autonomous State as two component parts of Agency Theory

The agentic state is the state of mind where you follow the orders of someone you believe to be an authoritative figure, you are deemed to be acting as their agent. You may experience moral strain if this go...
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Answered by Anna H. • Psychology tutor
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I am struggling understanding how to differentiate negative indices. I get confused with the power increasing or decreasing.

Hi there, this is a common confusion so don't worry. It is helpful to write out a number line when differentiating and drawing an arrow to show which way the power is moving. <---- differentiate----3 -2 -...
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Answered by Lucy B. • Maths tutor
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