Top answers

What is the difference between cells, tissues, organs and organ systems?

You can think of these 4 things as a hierarchy, where each 'element' is a building block for the next level. The smallest 'unit' are cells . There are trillions of cells in your body and these cells together...
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Answered by Callum G. • Biology tutor
81370 Views

a ladder stands against a wall, then it slides down. Describe the motion of the centre of the ladder while sliding!

the lenght of ladder is contant. when it is in the middle of sliding, it make a right angle triangle with the floor and wall, hence (the lenght of the ladder£^2 equal to (the lenght of floor to one end of th...
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Answered by Nirmala W. • Maths tutor
3163 Views

What could be said to classify Alfred the Great as the first British nation builder?

A law code arguably was one of the crucial founding steps of a nation. By creating a universal legal system the monarch creates a national identity, something every citizen could identify with. it creates a ...
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Answered by Justine R. • History tutor
4092 Views

Can we pinpoint a turning point in Tolstoy's Anna Karenina

Turning points are difficult in a novel as interwoven and complex as Anna Karenina. One could look at the book as a whole and try and identify a peripatetic moment and this is arugably nigh on impossible. A ...
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Answered by Justine R. • English tutor
5272 Views

What is an infinitive?

The infinitive, is word you will often hear in your Spanish classes (especially when studying grammar) and so it’s very important that you know what it is! The infinitive is the basic form of a verb. In Span...
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Answered by Elena O. • Spanish tutor
5093 Views