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what happens to the respiratory system when you breathe out?

When you exhale, the intercostal muscles relax. The diaphragm also relaxes and the ribs move inwards and downward. There is a decreased volume of the chest so therefore the pressure increases in the lungs. D...
OC
7340 Views

Solve the following simultaneous equation: 3x+2y=20 and x+4y=20

In this example, we want to find values for both x and y which are our unknowns. So we start by rearranging x to be on its own but still in terms of y. We then can plot it into the next equation. Hence we ge...
PS
Answered by Phillipa S. • Maths tutor
9044 Views

What kind of work experience should I be doing, and how does this feed into a medical school interview?

The work experience that you do to get in to medical school is really important - this is something that every admissions officer is looking for to prove that you are interested in and committed to the idea ...
HM
2577 Views

What is the difference between sex and gender? How do you define gender roles and gender socialisation?

Sex is defined as biologically and physiologically determined differences between men and women, such as chromosomes or genitalia. Gender is different to sex. It is a social construct, and something we have ...
MW
26578 Views

How would I structure a 24 mark essay?

What's important in a 24 mark essay is to clearly put forward your arguments for and against. This way, an examiner can see that you've fully understood the question and can respond to it in an organised and...
RR
Answered by Roma R. • History tutor
3250 Views