Top answers

Can you explain the food chain?

You always start with the sun which gives its every to grass which is a producer of energy. The arrow in the food chain, therefore, travels in the direction the energy travels in (in this case from the sun t...
AH
Answered by Amelia H. • Biology tutor
4515 Views

What is crude oil and how does fractional distillation work?

Crude oil is formed from detritus (dead living matter) of animal, plants and microscopic organisms under intense pressure and temperature. It is trapped under impervious rocks which stop the liquid and gas f...
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Answered by Amelia H. • Chemistry tutor
6303 Views

In Seamus Heaney’s poem ‘Digging’, how does the poet express admiration for his father?

In ‘Digging’, the first poem in Seamus Heaney’s first collection Death of a Naturalist , the poet dramatises the moment he decides to dedicate his life to writing poetry. Exploring the emotionally complex re...
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Answered by Ciarán W. • English tutor
13350 Views

What is the difference between the nominative case and the accusative case?

The nominative case is used to refer to who/what is doing the action, whilst the accusative case is used to refer to who/what the action is done to . Take for example the following sentence: Die Frau liest e...
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Answered by Belle L. • German tutor
33636 Views

Butane (C4H10) is an alkane. Complete the displayed structure of butane.

H H H H H - C - C - C - C - H H H H H
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Answered by Joseph M. • Chemistry tutor
9453 Views