2 ms·
Do you need to memorize the names of various bacteria in order to see that your hands become less dirty when you wash them? No.
by xigoi 4y ago
Do you need to memorize the names of various bacteria in order to see that your hands become less dirty when you wash them? No.
- astrange 4y agoBut you need to know how aerosol transmission works to know why disposable towels are cleaner than hand dryers.