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Example 3 Table: Copyri
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1 Write down the coordinates of the point P on each of the graphs below and interpret these coordinates in terms of the labels on the axes.

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Up to now only those points with positive or zero coordinates have been considered. But the system can be made to cope with points involving negative coordinates, such as (2, 3) or (2, 3). Just as a number line can be extended to deal with negative numbers, the x-axis and y-axis can be extended to deal with negative coordinates.

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1 This table categorises Tom's activities for the day.

ActivityTime/hours
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1 Consider the table about household sizes.

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The main teaching text of this unit is provided in the workbook below. The answers to the exercises that you'll find throughout the workbook are given in the answer book. You can access it by clicking on the link under the workbook. When prompted after exercise 2.2 to watch the video for this unit, return to this page and watch the four clips below. After you've watched the clips, return to the workbook.

Click 'View document' to open the workbook (PDF, 1.0 MB).

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How do you organise yourself?

## Activity

Make a note of how you organise your:

• emails

• internet bookmarks or favorites

• computer files

• your
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How familiar are you with the following different ways of keeping up to date with information; alerts, mailing lists, newsgroups, blogs, RSS, professional bodies and societies?

• 5 – Very familiar

• 4 – Familiar

• 3 – Fairly familiar

• 2 – Not very familiar

• 1 – Not familiar at all

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There is no doubt that CO2 is accumulating in the atmosphere. The record from Mauna Loa charts a continuing rise in CO2 concentration since measurements began in 1958, when the level was 315 ppm; the value had reached about 370 ppm by the end of the 20th century, and hit more than 378 ppm in 2004. Important as changes in atmospheric CO2 undoubtedly are (see below), we need to be aware that this is not the whole story of human-induced greenhouse forcing. In par
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Sweatshops and the exploitation of workers are often linked to the globalised production of ‘big brand’ labels. This unit examines how campaigners have successfully closed the distance between the brands and the sweatshops, while others argue that such production ‘kick starts’ economies into growth benefiting whole communities.

This unit is an adapted extract from the Open University course Author(s): The Open University

On the supply side of our energy systems, there is a very large potential for improving the efficiency of electricity generation by introducing new technologies that are more efficient than older power plant. The efficiency of a power plant is the percentage of the energy content of the fuel input that is converted into electricity output over a given time period. Since the early days of electricity production, power plant efficiency has been improving steadily. The most advanced form
Author(s): The Open University

Except in the form of food, no one needs or wants energy as such. That is to say, no one wants to eat coal or uranium, drink oil, breathe natural gas or be directly connected to an electricity supply. What people want is energy services – those services which energy uniquely can provide. Principally, these are: heat, for warming rooms, for washing and for processing materials; lighting, both interior and exterior; motive power, for a myriad of uses from pumping fluids to lifti
Author(s): The Open University

By the end of this unit you should be able to:

• describe environmental matters regarding obligation and entitlements from a ‘caring’ perspective;

• appreciate the significance of environmental consequentialist ethics in conversations around developing care;

• identify and compare formal and less formal expressions of environmental responsibility;

• understand ‘accountability’ in the context of environmental issues;

• ide
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Although I have dwelt on the agreements relating to agriculture, textiles, and intellectual property, there are some two dozen others, each involving intricate legal and technical details. These include agreements on:

• Sanitary and phytosanitary (SPS) measures: these are standards applied to imported agricultural products so as to protect plants, animals and humans in the importing country. However, these standards are often arbitrarily used to restric
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You might think that learning from audio-visual sources is very different from learning from written sources yet, somewhat surprisingly, it is much the same. This section of the unit will help you to think about how you can turn the very familiar, but usually passive, process of watching a video into the active process of learning. Watching the video will involve the skills of engaging with the material and making sense of it for yourself, just as if it were written materials. The advantage o
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Alexander, G. (2002) eGaia: Growing a Peaceful, Sustainable Earth through Communications, Florida, Lighthouse Books.
Allinson, C.W. and Hayes, J. (1996) ‘The cognitive style index: a measure of intuition-analysis for organizational research’, Journal of Management Studies, Vol. 33, No. 1, p. 122.
Asch, S.E. (1963) ‘Effects of group pressure up on the modification
Author(s): The Open University

Homeostasis is the term used to describe the dynamic equilibrium that maintains living systems. Homeostasis could be described as the perfect blend of positive and negative feedback cycles in order to maintain living systems.

Homeostasis occurs at all levels of organisation within living systems. Individual cells are constantly pumping chemicals across their membranes in order to maintain the appropriate chemical composition for crucial functions such as metabolism and DNA repair
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By the end of this unit you should be able to:

• use the sign graph diagramming technique to develop and communicate a systemic understanding of complex situations;

• identify feedback relationships as fundamental controllers within systems and as points of intervention to enact change.

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Except for third party materials and otherwise stated (see terms and conditions), this content is made available under a Creative Commons Attribution-NonCommercial-ShareAlike 2.0 Licence

## Author(s): The Open UniversityLicense informationRelated contentExcept 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

In April 1968 a group of thirty people from ten countries gathered in Rome. From this meeting grew the ‘Club of Rome’, a loose association of people of twenty-five nationalities all united by their belief that mankind faced major problems which were of such complexity that traditional institutions and policies were not capable of dealing with them. They commissioned a study which was eventually published in 1972 entitled The Limits to Growth (Meadows et al., 1972). This initiative
Author(s): The Open University