Mystery #2Tier 2microbes / your body
A virus cannot even move on its own, so how does it manage to make you ill?
A virus is astonishingly feeble. It has no legs, no mouth, no muscles, and can't travel a single millimetre under its own steam. It's basically a speck. So how on earth does something that helpless manage to knock you flat in bed with a fever?
Your guess
What's your hunch about how something that can't even move could still make you really ill?
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.