Partnering, Not Protesting with the Netter Center
Around 1979, when Ira Harkavy was finishing his Ph.D. at Penn, his mentor in the history department, Lee Benson, delivered an address that called for practitioners in communities to work together with academics. It was a simple but powerful idea that took root in Harkavy's imagination. He began to brainstorm with Benson: How exactly can these seeming disparate groups work together? What good can history and social science—and even universities do in the world? What, exactly, are universities
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The electronic spectra and the determination of the excited state geometry of 3A" propynal /|nby Chh
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TED407 Session 13 Fall 2012
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Introduction

This unit is from our archive. It is an adapted extract from the Science (S365) module that is no longer in presentation. If you wish to study formally at The Open University, you may wish to explore the courses we offer in this Curriculum Area

This unit is concerned with macroevo
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4.2 Intermediate forms

In essence, the argument about intermediate forms runs as follows. If whales evolved from a terrestrial ancestor through the accumulation of small differences over time, we should expect to find the fossils of a number of ‘missing links’, i.e. creatures with a mixture of terrestrial and aquatic characteristics. In fact, we might expect to find a succession of such animals, each a little bit more whale-like and a little bit less well adapted to life on land than its predecessor.

To m
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2.7 … and becoming more intelligent

Intelligence is a useful commodity: it can help an animal to make sense of its environment and cope with the demands of social behaviour (including courtship and competition). Hunters tend to be relatively intelligent, and otters, pinnipeds and cetaceans, for example, share a playful curiosity that is characteristic of animals that catch other animals for a living. Some especially extravagant claims have been made for the intelligence of the toothed whales, largely because these animals use c
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2.2 Breathing air

A swimming elephant can breathe by holding the end of its trunk out of the water, but if it tried to find its food under the surface, like the desman, it would have to hold its breath. Neither the mammalian lung nor the skin can extract enough oxygen from water to sustain life, so aquatic mammals must come to the surface at intervals to breathe; and all of them – pinnipeds, sirenians and cetaceans – drown if they are prevented from doing so for prolonged periods.

Lungs form 7% of th
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2.1 Land versus water

Mammals share a number of biological characteristics that mark them out as members of the class Mammalia. Many of these are adaptations to a life on land. For example:

  • Mammals give birth to young at a relatively advanced stage of development and feed their young on milk.

  • Most mammals have hair, or fur, covering part or all of the body.

  • Mammals have a high metabolic rate and maintain a relatively high and constant body temp
    Author(s): The Open University

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    Except for third party materials and/or otherwise stated (see terms and conditions) the content in OpenLearn is released for use under the terms of the Creative Commons Attribution-NonCommercial-Share