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What is the difference between the two Spanish verbs for 'to be': 'ser' and 'estar'?

There are many specific purposes that require the use of either 'ser' or 'estar', but in the simplest terms there is one key difference. 'Ser' refers to 'being' in the sense of existence, describing what thi...
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Answered by Gian H. • Spanish tutor
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What's the difference between an atom and an ion?

Atoms and ions are both made up of proton's and neutrons in the nucleus with electrons orbiting around. The difference is atom's have equal number of proton's and electrons while ions have more or less elect...
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Answered by Oliver B. • Chemistry tutor
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What's the difference between aerobic and anaerobic respiration?

In short Aerobic is with oxygen - think aero=air, therefore oxygen is present. This process also produces more energy and takes place on mitochondria only producing carbon dioxide and water from glucose and ...
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Answered by Oliver B. • Biology tutor
4815 Views

With the help of a diagram, explain the cause of demand-deficient unemployment.

One of the main macroeconomic goals of an economy is to keep unemployment levels low. Unemployment is the state when people who are actively seeking a job are unable to find one. A government hopes to achiev...
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Answered by Olivia D. • Economics tutor
23363 Views

With reference to a play you have studied, consider how playwrights incorporates light to convey their ideas.

Excerpt of longer essay, comparing Tennessee Williams's The Glass Menagerie and Arthur Miller's Death of a Salesman. Lighting in the opening scenes is used by Williams and Milled to present the hardships fac...
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