In the reading passage, the author states three benefits of growing genetically modified trees. However, the professor in the lecture reputes the author's arguments one by one.
First, the passage claims that the genetically modified trees are much more stronger than the unmodified ones. In contrast, the professor says that the genetically modified trees are only capable of surviving in the particular condition.When the climate changes or some new pests appear, a part of the unmodified trees can survive at least.But the genetically modified trees are uniform, which is the reason why they might be wipe out at all.
Plus, even though the author comes up with that the genetically modified trees can bring more profits for the planters, the professor suggests that the cost of paying the companies that producing the seeds of genetically modified trees is enormous, which need to be covered every year according the law.
Finally, to contrast the argument in the passage that genetically modified trees can safeguard the wild and endangered trees by replacing them for cutting, the professor points out that genetically modified trees could cause more damage to the wild trees.The modified one is more competetive than the unmodified one, which will induce the wild trees being lacking in suvival resources like sunlight and water,etc.Therefore, it would definitely have an adverse influence on the unmodified trees.