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...simple deductions about antibiotic use and resistance patterns discuss the consequences of a future without antibiotics. Although this is an introductory course to antibiotic resistance, it assumes that you have a basic understanding of DNA and proteins. If you are unfamiliar with these concepts, you may want to try our free OpenLearn course What do genes do? or listen to...

...simple explanation of sound in terms of a travelling pressure wave explain ‘cycle’ in terms of an oscillating source and the pressure wave it produces relate amplitude (including peak-to-peak and r.m.s.), frequency, period and wavelength to a sinusoidal waveform calculate the wavelength of a pressure wave from a graph of pressure against distance...Sound for music...

...simple chart like this. So I can fill in the butterflies I've seen in my 15 minute station. One Small Tortoiseshell. And one Red Admiral. OK, that's my 15 minutes up. So I can just add a few more little details to the last page. And then press Submit. Now, if you're not using the app, then you now need to go and enter it on the website. OK, right. Now I'm going to put in...