The lecturer discusses the issue concerning cloud seeding. On this matter, the lecturer says that cloud seeding is not effective method because it has appeared before 50 years but it is not use broadly because there are some reasons. This cast doubt on the reading passage claim that cloud seeding is very useful to cease the rain cloud formation.
First, the lecturer explains that with only a lab experiment cannot complete support the effectiveness of cloud seeding because the lad is in constant condition but the real nature is very dynamic. Furthermore, if the cloud seeding functions to split the larger droplet into smaller one, it would be serious problem in farms because, assuredly, they need water in order to raise crops. This counters the reading passage's contention of cloud seeding proved in lap for its effectiveness.
Second, the lecturer says that the success cases which done in China had a special factor that lead it to success which is thick air pollution which is contains many particles to help cloud seeding. As a result, the lecturer effectively nullifies the reading passage's assertion that the case of China supports its effectiveness.
Finally, the lecturer clarifies that case of Kansas is not role of cloud seeding. This is because the rate of reduction of droplet rates happened as globally. It was not unique weather phenomenon. This ultimately refutes the reading passage contention that Kansas already utilized cloud seeding thus it would be possible to other regions of U.S.
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