For example, does an oak tree convert more oxygen than a comparably sized vat of bacteria or vice-versa?
3.
Many of the drug compounds are difficult to synthesize, so pharmaceutical companies use natural organisms, such as soil bacteria, to make the drugs in huge, industrial-sized vats.
4.
Hoping to snag just a few of the particles, experimenters have placed swimming-pool sized vats of various substances deep inside mines all over the world, where they are shielded from just about everything but the penetrating neutrinos.