11. Even the desert soil suffers from fire. 12. This was no mean feat when you consider that desert soils are more like concrete than dirt. 13. Those artificial surfaces then release heat at night more slowly than irrigated farmland or natural desert soils . 14. Near the bottom, the sides are made of cement mixed with desert soil for a more natural look. 15. The desert soil is covered with sand and pebbles; there are marshes, seasonal lakes and seasonal river beds. 16. This includes the cold desert soil . 17. Some are aerophytes or " air plants ", which have no roots and grow on shifting desert soil . 18. Citrus and fruit trees are usually grafted to some other variety that is more adaptable to desert soils . 19. It grows from in sandy desert soil in the company of creosote bush ( " Larrea tridentata " ). 20. Like Hopi farmers a thousand years before, he would figure a way to rouse life in the thirsty desert soil .
