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What is Lamarck's theory?

Lamarck's theory suggests that changes that are obtained during a lifetime can be passed on to the offspring of that creature. The changes typically favour survival for the animal. For example, if a giraf...

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Answered by Sarah C. Biology tutor
4141 Views

How is crude oil separated into fractions?

The crude oil is placed into large tanks, which are heated at the bottom, creating a gradient whereby the column is cooler at the top. The heat causes the oil to evaporate, and each fraction will reach a ...

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Answered by Sarah C. Chemistry tutor
3589 Views

What is a topic sentence and why should I use them?

A good structure is crucial for a good essay because it allows the reader to follow your line of argument and because it prevents any confusion. One of the key elements of a good paragraph, therefore, is ...

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Answered by Helena L. English tutor
8169 Views

Solve 3(x-2) = 21

To begin, understanding the basica concept of algebra and multiplication using brackets needs to be covered as I have met quite a few children who have been used to these equations but are still unsure ab...

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Answered by Nicole F. Maths tutor
3846 Views

Expand and simplify (6x - 2y)(3x - 7y)

Expand brackets: 18x^2 - 42xy - 6xy + 14y^2 Simplify: 18x^2 - 48xy + 14y^2

3 marks

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Answered by Beth W. Maths tutor
6299 Views

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