| http://www.w3.org/ns/prov#value | - At the same time as they interact with the soil to extract water and minerals, they also have to fight off microorganisms that consider those trees to be food. (Rot, or decay, is caused by molds and other organisms that feed on the wood.) As a defense, some trees have evolved complex chemical compounds--the industry term is extractives--that protect the wood against decay.
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