When I was a kid, my parents told me that everyday items are always filled with bacteria, such as banknotes, tabletops, keyboards, smartphones, floor (pick up your fallen food within 5 seconds or it will be infected with bacteria), I grew up told there are millions of bacteria under the fingernails all the time, is this really true? How can they be always there and survive that long if they are on the floor, banknotes etc.? They are living organisms, need to eat something, right? For my thinking there is nothing to eat on the banknotes normally. Can anyone bust this myth or confirm? Thanks in advance.
In: Biology
Hi!
I’m a data nerd, [look here for some mind blowing dta](https://www.vox.com/science-and-health/2018/5/29/17386112/all-life-on-earth-chart-weight-plants-animals-pnas)
These masses are in giga tons of carbon to make thinks like mass of water less of the measurement.
The **total mass of humans** on the planet contains 0.06 giga tons of carbon.
**All animals** (including humans) is around 2 giga tons of carbon
**All Plants** is something like 450 GT C. This is by far the biggest group.
After that, **Bacteria are the second biggest group at 79 GT C**
Then Fungi (12 GT C)
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