I am working on an educational resource about the relative scales of resources compared to the earth. Attached is an example of the earth compared to various elements contained within, as well as a comparison of the sum of all water and the atmospheric gasses (at standard temperature and pressure). Such images are great for creating a sense of scale and displaying the fragility if earth's ecosystems.
I want to also include spheres of wet biomass, which I would imagine to be quite small. However, when I do math I am faced with spheres that seem too small. I did the math based on 3 methods and got answers of 6km to 14km diameter, based on Metric Ton estimates of 1.57E+12, 1.38E+11, 1.00E+12
Two folks on Quora estimate 10km diameter. My questions are these:
- What is the appx wet biomass of all plant and animal life on earth?
- What is the appx density of it such that it can be converted to volume?
- Is it really so small? I am used to being humbled, but this seems excessive. :-)