This is a solid, inorganic substance with a crystalline structure that is formed through geological processes.

Example: talc, gypsum, calcite, fluorite, apatite, orthoclase feldspar, quartz, topaz, corundum, diamond

Ants live on acacia trees in south america. the ants feed on sugars secreted by the trees. the trees provide room for the ants to live. the ants sting any other insect or animal that comes to eat the trees. what type of relationship is this?