Student hmm umduring the trip well i guess i could so

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Student : Hmm.. . um...during the trip, well, I guess I could. So I should plan to take my books and stuff with me. Professor : You’ll definitely need your class notes. I’m giving you several short essay q uestions to make you think critically about the points we’ve discussed in class, to state.. .uh state and defend your opinion, analyze the issues, speculate about how things might have turned out differently. So, you see, I don’t care if you look updates a nd that kind of thing. What I want is for you to synthesize information to reflect back on what we’ve read and discussed and to form your own ideas, not just repeat points from the textbook. Does that make sense? Student : Yeah, I think so. You are looking for my point of view. Professor : That’s right. The mid -term exam showed me that you know all the details of who, where and when. For this test, I want to see how you can put it all together to show some original thinking. Student : That’s sounds p retty challenging, especially trying to work it into this trip. But, yeah, I think I can do it. Professor : I’m sure you can. Student : Thank you, Professor Bronson. Professor : Have a great time in Montreal. TPO 16 Lecture 3 Narrator: Listen to a part of a lecture in a biology class. Professor : OK. Let’s continue our discussion about animal behavior by talking about decisions that animals face, complex ones. Animals, even insects, carry out what look like very complex decision making processes. The question is how. I mean no one really thinks that, say a bee goes through weighing the pros and cons of pollinating this flower or that flower. But then how do
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小马过河 TPO 资料专区 BBS.XIAOMA.COM TPO1-33 2800 多题独家 TPO 视频讲解尽在小马 tpo 专区 400-633-1986 animals solve complex questions, questions that seem to require decision making. The answer w e’ll propose of course is that their behavior is largely a matter of natural selection. As an example, let’s look at foraging behavior among beavers. Beavers eat plants, mostly trees. And they also use trees and tree branches to construct their homes in streams and lakes. So when they do forage for food and for shelter materials, they have to leave their homes and go up on land where their main predators are. So there are a number of choices that have to be made about foraging. So for example, um... they need to decide what kind of tree they should cut down. Some trees have higher nutritional value than others, and some are better for building material, and some are good for both... um...aspen trees. Beavers peel off the bark to eat and they also use the branches for building their shelters. So aspens do double duty. But ash trees, beavers use ash trees only for construction. Another decision is when to forage for food. Should they go out during the daytime when it’s hotter outside and they have to expend mo re energy, or at night when the weather is cooler but predators are more active? Ok, but there are two more important issues, really the most central, the most important, OK? First, let’s say a beaver could get the same amount of wood from
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