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How could species have evolved from an ancestor such as Archaeopteryx?

When the population of a species is separated, each group is put under different selection pressures due to differing environments. In each population there is genetic variation, and more offspring are produ...
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Answered by Heather J. • Biology tutor
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Find the area of the region, R, bounded by the curve y=x^(-2/3), the line x = 1 and the x axis . In addition, find the volume of revolution of this region when rotated 2 pi radians around the x axis.

As we are looking to find the area under a curve we can use integration . The area under a curve with equation y = f(x), bounded by the lines x = a and x = b and the x axis can be expressed as:A = integral (...
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Answered by Henri F. • Maths tutor
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Explain the process of transcription in Eukaryotes

Transcription is the process by which a DNA sequence is copied into a complementary RNA sequence. RNA polymerase binds to the promoter region of the DNA chain and causes the unwinding and separation of the D...
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Answered by Heather J. • Biology tutor
18910 Views

How should I structure a history essay?

The ability to communicate ideas clearly and effectively is a vital tool in any exam. This is not to say that it is not equally important to have a detailed knowledge of the relevant period, but proper essay...
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Answered by Matthew F. • History tutor
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Which prepositions take the dative?

Aus, bei, mit, nach, seit, von, zu, gegenueber.
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Answered by Sophie F. • German tutor
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