tpo 55Because 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. A number of propos

The reading and lecturer are both about a device which can stop desertification in a certain area. The author of the reading feels that the device will not successfully fight against the desertification and presents some reasons for holding this aspect. The lecturer challenged the claim made by the author. She is on the opinion that none of the reasons is convincing. To begin with, the author argues that the device is very expensive and some country will not able to afford. The specific argument challenged by the lecturer. She mentions that this device can be reused. She also elaborates by bringing the point that it can be used for at least twenty trees, thus the cost is reasonable. Second, the author suggests that people live in the desert area are very poor and difficult to pursue them to use the device. He also claims that in extreme weather they sometime could not afford their food then how they afford this kind of expensive device. The lecturer rebuts this by mentioning that this device not only helps to grow the plant but also can grow vegetable. She also adds that people can eat this vegetable and also branches of the tree they can use as firewood. Third, the author posits that the device cannot store enough water. He also states that when the tree becomes big this device will not enough for the tree to survive. In contrast, the lecturer position is that if the root of the trees reaches the level of water they can survive even the device is removed. She also additionally says, in Sahara desert, 90% of the trees thrive in this way even the device remove two years ago.