Which layer of rock contains more humus

in theory, limestone is composed principally of the compound calcium carbonate - caco3, but in reality this compound is deposited in conditions involving a number of other compounds as impurities so it ends up being a mixture of many compounds.

hope this : -)

tony (lordcaos066)

- both b and d.

-since b and d are the closest coastlines then that makes it the most affected.

< 3