Mystery #2Tier 2-3microbes / viruses / scale
A bacterium is already tiny, so how much smaller still is a virus?
You have probably heard that a single germ is far too small to see. Bacteria are already so tiny that millions would fit on the head of a pin. And yet a virus is smaller still, smaller than the germ that is already too small to see. Just how much tinier can something get?
Your guess
Take a guess: how much smaller than a bacterium do you think a virus is?
There's no single magic word to type, have a go in your own words, then reveal the answer to see how close you got.
Make a guess to unlock the hints and the answer.