1 Natural groups

Darwin made extensive observations on a great many creatures, including mammals, and noticed that species fell into natural groups, e.g. lions, tigers and leopards have many similarities, and resemble cats. On the basis of his observations, he was able to place mammals in distinct groups.

His work has continued, and we now recognise that mammals have evolved from a common ancestor, and have branched into many different groups, or ‘Orders’. The animation below shows the different O
Author(s): The Open University

License information
Related content

Copyright © 2016 The Open University

Recognizing Numbers - 1-20
A cool way to learn the numbers 1-20.  Colorful and well-narrated.  The narrator calls out each of the numbers then encourages the user to "find" a number.  (02:59)
Author(s): No creator set

License information
Related content

2.3.1 Burner reactors

The object of a burner reactor is to use up or 'burn' as much uranium-235 as possible. For some reactor designs the uranium-235 content of natural uranium is increased chemically to produce enriched uranium, which contains up to 3% uranium-235 (compared with the naturally occurring 0.7%). The chain reactions in Author(s): The Open University

EPod 2 – Low Cost Solar Cells
Dye sensitised - the new, low cost solar cell!
Author(s): epod@imperial.ac.uk (Envision Podcasting Team at I

License information
Related content

Rights not set

3.3.2 Water pollution from coal mines

Most underground and some surface mines lie well below the water table. Both therefore have the potential to pollute any groundwater that flows through them. The root cause of the problem is the action of aerobic bacteria on pyrite (FeS2) within the coal sequence. This process releases metal and sulphate ions into solution, which in turn causes the acidity of the mine water to increase:

Author(s): The Open University

License information
Related content

Copyright © 2016 The Open University

French Lesson Week 2 - Leçon 2 [Expressions With Avoir/Être]
Lesson about expressions using 'be,' (etre) and 'have,' (avoir) in French.  These expressions are used to describe moods, feelings and physical conditions. (09:27)
Author(s): No creator set

License information
Related content

1.6 Summary

You may find it useful to go over the main points of the first section again.

  1. We in the West generally recognise two different concepts of musical creation, namely composition and improvisation. Composition is widely characterised as a relatively lengthy process involving the use of notation; improvisation involves the spontaneous generation of music without notation. The distinction can be useful when applied to our own art music tradition.


  2. Author(s): The Open University

    License information
    Related content

    Copyright © 2016 The Open University

Conclusion

Despite claims made for its potential, wave energy can never make any significant contribution to global energy supplies, although it may find a use in coastal communities. The greatest potential from wave energy exists far from shore, but waves are wind-dependent and so supplies are bound to be irregular.


Author(s): The Open University

License information
Related content

Copyright © 2016 The Open University

RVC 05 - Equine Stem Cells
Stem cells have been making big waves in science recently. Listen to this episode of the RVC Podcast to find out how Roger Smith, Professor of Equine Surgery at the RVC, is planning to use innovative stem cell research in order to improve the treatment of tendon disease in horses.
Author(s): No creator set

License information
Related content

Conclusion

This free course provided an introduction to studying Business & Management. It took you through a series of exercises designed to develop your approach to study and learning at a distance and helped to improve your confidence as an independent learner.


Author(s): The Open University

License information
Related content

Copyright © 2016 The Open University

3 DNA: Spot the difference

Here we look at DNA, the molecule which contains the instructions for making each living creature. It is contained within the genes of every individual living thing on Earth. Closely related creatures have DNA that is very similar, and distantly related creatures have DNA that is very different. By looking at how similar or different their DNA molecules are, we can see how closely related two species are.

Author(s): The Open University

License information
Related content

Copyright © 2016 The Open University

3.1 Environmental aspects of coal mining

Coal produced by both types of mining is used either to fuel electricity generation or for industrial and domestic heating, both of which result in atmospheric pollution, but here we are concerned with direct environmental impact on the land. Surface and underground mining operations cause significantly different environmental problems. Those that surround surface mining are common to any large quarrying operation: sterilization of the land and restoration of quarry sites; dust; and noise whi
Author(s): The Open University

License information
Related content

Copyright © 2016 The Open University

Handwriting Repair with Kate Gladstone - Making Handwriting Make Sense
This video explores why students may have trouble with penmanship. The video is a slide show with music. Video does not follow the 'standard' practice of how to write in cursive, but the video may have value to stuggling cursive writers.
Author(s): No creator set

License information
Related content

The reversal of cell differentiation and prospects for cell replacement therapy
The inaugural Anne McLaren Memorial Lecture, "The reversal of cell differentiation and prospects for cell replacement therapy", given by Prof Sir John Gurdon FRS, University of Cambridge, at Lady Margaret Hall, Oxford, on 7 November 2008. Visit http://media.conted.ox.ac.uk/McLaren-2008 to view the full presentation from Professor Sir John Gurdon FRS, including his slides.
Author(s): No creator set

License information
Related content

Ann Cooper Talks School Lunches
19:38 Video Speaking at the 2007 EG conference, "renegade lunch lady" Ann Cooper talks about the coming revolution in the way kids eat at school -- local, sustainable, seasonal and even educational food.
More: http://www.edu-cyberpg.com/NCFR/health.html


Author(s): No creator set

License information
Related content

Writers reading: favourite books

Authors: 
Michiel Heyns, Finuala Dowling, Imraan Coovadia, Yewande Omotoso, Henrietta Rose-Innes