The reading material has proposed three possible methods to prevent birds hitting into tall buildings, but the professor claims that none of the three methods is effective enough to hinder the problem.
Firstly, from the perspective of glass with pure color, the professor states his doubt, because according to the 登录查看全部内容
The lecture opposes the view mentioned in the reading with strong supporting evidences presented, aiming to further illustrate that it is positive to let the wolf pack back into the ecology.
Firstly, from the perspective of eco-balance, the professor states his doubt, because according to the lecture, without the existence of predators, the population of e 登录查看全部内容
The lecture opposes the view mentioned in the reading with strong supporting evidences presented, aiming to further propose the effectiveness of algae planting.
Firstly, from the perspective of the resource waste, the professor states his doubt, because according to the lecture, algae is not particular over the growing environment. It is 登录查看全部内容
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