Excluding oil, what are Earth's most crucial natural resources?

Question

Excluding oil, what are Earth's most crucial natural resources?

Answer 1

fresh drinking water is definitely the most important natural resource, and is the one most in danger of depletion

Answer 2

trees nd plants 2 give oxygen and take in CO2

Answer 3

The main one is fresh water. We're also short on tungsten.

Answer 4

Fresh water, clean air, fertile soil, and children.

Answer 5

Coal.

Answer 6

coal black coal

Answer 7

Gas (actually, that goes with Oil) & Metals .. check out LME prices over the last few years ..

NB. you may have noticed the local criminals have started stealing lead from church roofs again :-) ..

PS. There is no problem with water - it covers 3/5ths of the earths surface (we have Oceans of it :-) ) & so much falls out of the sky that we end up with floods - any local limits to fresh water supply have everything to do with failure to allocate resources (opposition to new reservoirs, Government / tax payer / utility payer refusal to pay for desalination / sewerage plants etc etc) ...