I would would inhale deeply then uttered out a long elaborate speech on doton.
First off, Ninjas....ninjas are basically the military force of a nation. Ninja are also refereed to as shinobi. Shonobis vary in rank depending on their skill level and effectiveness. Shinobi use chakra, a spiritual and physical mixture, to perform various techniques. These techniques are mostly made up of the 5 basic elements, Earth, Wind, Fire, Wind, and Lightning. Dfferent combinations amongst the 5 area recognized as special traits, also known as "Kekkei Gekai, Tota, or Morra. "Skilled users can form elemental chakra into certain objects pertaining to their element, for example if I plan on using doton based chakra to make spikes out of the earth, I would have to think of realistic boundaries for my jutsu. I wouldnt be able to make a mountain form in the middle of the ocean... ( or could I? Lol). With that being said, the earth element is chakra infused with the earth elemental affinity to be able to create and manipulate Earth and everything that has to do with it including, rocks , the ground, canyons, etc, . Doton is strong against water (Suiton) since it naturally absorbs water. Doton is weak against Raiton( lightning) since lightning can soften the earth and basically trash it.