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Suggest how the two sub-species have developed from a single ancestral population.

Two populations become separated by a barrier such as sea (geographical separation). As a result populations cannot interbreed, hence gene flow between two populations is prevented. As a consequence, only a ...
MS
Answered by Maja S. • Biology tutor
3523 Views

write log2(5) +log2​​​​​​​(3) in its simplest form

This is an exapmle of the addition rule as part of the logorithm syllabus. The general rule is log a b + log a c = log a (b*c) When the base of the logarithm is the same and they are added the to numbers of ...
NP
Answered by Nicole P. • Maths tutor
12749 Views

Simplify 3(x-5)/x^2-3x-10

The question is asking us to simplify; in particular, we have to simplify a fraction. We simplify a fraction by cancelling a factor from both the numerator and the denominator. We can apply this algebraicall...
NB
Answered by Nathan B. • Maths tutor
5709 Views

How can you divide an algebraic expression by another algebraic expression?

I would begin the session with checking a basic understanding of the methods of long division, as these will not have been taught very recently. Many students will have been using short division, as it is qu...
JH
3741 Views

What are the most effective revision techniques?

Create a revision timetable. It doesn't have to be to the hour, but make sure to write down all the topics you need to cover. For example, during my A-levels I'd do one mini topic every 2 days. - Start early...
LJ
Answered by Lucy J. • Sociology tutor
2184 Views