How to termites use fungi?

The termites cultivate the fungi in a fungus garden, comprising a few hundred fungus combs, structures built from chewed up grass and wood, and inoculated with fungal spores. Each year, these fungi produce a crop of large mushrooms (pictured at left), known locally as omajowa, which are highly prized as a delicacy.

Explanation:

since the atomic number is the number of protons in the nucleus, as we move to the left on the periodic table, the electrostatic pull between the nucleus and the valence electron shell decreases. as we move down a group (vertical column), the valence shell energy level gets further and further from the nucleus.