TPO 55 Writing IntegratedBecause of climate change more and more land that was once used to grow crops or provide food for animals is turning to dry unusable desert land There are many proposals about how to stop this process known as desertification

The passage and lecture both talk about whether using the devices to protect desertification is worthy. The passage states that it will not be successful. However, the lecture counters this statement.

Firstly, the passage indicates that buying such kind of device is too costly so that not every country could afford it. While the professor points out that the device is reusable and can be used by more than 20 times. In other words, it is a very cost-effective way.

In addition, the passage suggests that installing and maintaining devices affects people's life a lot and may not help supply food for the local people. Nevertheless, the professor mentions that these devices are more advantageous to local people's life instead of doing harm to them. For instance, the devices could also collect water for other plants. As a result, people could grow more food. Also, the trees can provide firewood, which is also indispensable for producing food.

Last but not least, the passage says that the capability of the device is too limited to support grown threes to live without the rain. On the contrary, the professor argues that big trees have long roots to get water from the areas ever very far away. Consequently, 90％ trees could survive for at least 2 years in a dry environment after the devices removed.

To sum up, in the professor's view, the devices are effective tools to help prevent desertification because they could be reused, bring benefits for providing local people food and sustainable advantages for trees to grow.