Question 27 When douds are seeded from the ground, what actually causes ice crystals to form? Select one: Silver-lodide smoke Nudear radiation Propane Dry-ice pellets Question 28 Clouds would most likely be seeded from airplanes when __ Select one the process of spontareous nucleation cannot be employed temperatures are lower than usual it is important to save money the production of precipitation must be efficient P Flag question

**Question 27:**When clouds are seeded from the ground, what actually causes ice crystals to form?**Answer:** Silver-iodide smoke**Explanation:** Silver-iodide smoke is used in cloud seeding because it provides nuclei for water droplets to freeze around, facilitating the formation of ice crystals.---**Question 28:**Clouds would most likely be seeded from airplanes when __**Answer:** the production of precipitation must be efficient**Explanation:** Cloud seeding from airplanes is often done to enhance the efficiency of precipitation production, especially in areas where natural processes are insufficient.