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1.4 Inadequate intake

In the developed world inadequate intake of food, at least in terms of energy, is not common. Nevertheless, in many parts of the world starvation is a huge issue, and it is estimated that tens of millions of people face starvation, and well over 5 million, mainly children, die each year from inadequate nutrient intake. Importantly, lack of particular nutrients impairs our ability to carry out many functions.

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1.3 Balanced energy intake

There is a need for a certain daily energy intake to allow metabolism to occur in the body. Metabolism means all the chemical reactions occurring in the body and there are two types of process involved: catabolism breaks down larger molecules into smaller ones often with energy release and anabolism is the building up of larger molecules from smaller precursors, often requiring energy. The body requires energy to power anabolic, mechanical (for example, muscle contraction
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3 Sources of energy from the natural environment

The natural environment itself is bathed in energy from other sources. Standing on a cliff top on a bright spring day you can feel the warmth of the Sun and the freshness of the breeze and hear the crashing of breaking waves below. All these energetic processes can be compared in terms of
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Acknowledgements

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

Grateful acknowledgement is made to the following sources for permission to reproduce mate
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2.12 How likely are particular results?

In real experiments, as opposed to hypothetical ones, it is very rare that scientists make a sufficiently large number of measurements to obtain a smooth continuous distribution like that shown in Figure 7d. However, it is often convenient to assume a particular mathematical form for typically distributed
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2.4 Fruit bats and flying foxes

In this section and the next, you will be asked to write answers to activities in particular numbers of words – Activity 3 asks for about 200 words and Activity 5 requires 150 words – you might like to use your Learning Journal for this. Guidance of this type gives a useful indication of the degree of detai
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Introduction

This unit will introduce you to the wide-ranging types of mammals that live in the trees. You will learn how they thrive in this demanding environment, with the help of a range of intriguing adaptations related to their unusual life-styles.

This is the eighth in a series of units about studying mammals. To get the most from these units, you will need access to a copy of The Life of Mammals (2002) by David Attenborough, BBC Books (ISBN 0563534230), and The Life of Mammals (
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Acknowledgements

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

Grateful acknowledgement is made to the following sources for permission to reproduce mater
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Acknowledgements

Don't miss out:

1. Join over 200,000 students, currently studying with The Open University [http://www.open.ac.uk/ choose/ ou/ open-content]

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5 Miss Piggy

As the earliest mammals – the insectivores – were specialists, it follows that the omnivore lifestyle must have arisen at some later stage in a group or groups of non-omnivores. In fact, both seed eating and leaf eating arose before omnivory. Twenty million years ago, Dinohyus was undoubtedly a ‘specialist’ omnivore.

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Introduction

This study unit is an adapted extract relevant to The Open University course SDK228 The science of the mind: investigating mental health

This unit looks at how language is understood, which includes hearing and how sounds and words are interpreted by the brain. It takes an interdisciplinary approach and should be of wide general interes
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The content acknowledged below is Proprietary (see terms and conditions) and is used under licence (not subject to Creative Commons licence ).

Grateful acknowledgement is made to the following sources for permission to reproduce material in this unit:

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Introduction

This unit explores origins of the Universe by looking in detail at events immediately following the Big Bang. Starting with looking at the cooling of the very early Universe, the unit then moves on to the inflation era, the quark-lepton and the hadron era. Then the unit looks at how fundamental particles began to synthesise to form nuclei, and from here it discusses the development of larger structures like stars and galaxies. By examining closely the forces in play and the interactions of fu
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1.5.5 Social Bookmarks

If you find you have a long unmanageable list of favourites/bookmarks you might like to try social bookmarks as an alternative.

Activity - What you need to know about Social Bookmarks

Read 7 things you should know about social
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2.1 The Houses of Parliament

In this unit we will be concentrating on how Acts of Parliament are made in England and Wales. Scotland and Northern Ireland have separate procedures for making legal rules, although they are largely similar. In England and Wales, Parliament consists of the House of Commons and the House of Lords. The site of the Houses of Parliament is the Palace of Westminster in London. The Palace of Westminster was a royal palace and the former residence of monarchs.

The UK Parliament dates f
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3.3.1 Try some yourself

1 Look at the diagram below and answer the following questions:

  • (a) Write down the coordinates of the points P, Q, R, S and T.

  • (b) On this diagram,
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1.6.1 Introduction

The process of keeping up-to-date in your chosen subject area is useful for your studies and afterwards, for your own personal satisfaction, or perhaps in your career as part of your continuing professional development.

There are a great many tools available that make it quite easy to keep yourself up to date. You can set them up so that the information comes to you, rather than you having to go out on the web looking for it. Over the next few pages, you will be experimenting with some
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1.6 The human impact on the atmosphere: the coming of the industrial age

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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1.2.6 Defining global markets

Global markets for manufactured goods, as opposed to, say, primary commodities such as oil and timber, arose largely in the second half of the twentieth century as trade between countries intensified. The lowering of transport costs and the relative fall in trade barriers enabled firms in one country to compete with a domestic rival in another. The supply of manufactured goods across the globe as a result of worldwide demand, principally from the affluent economies, thus heightened competitio
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6.3.1 Prototyping

The first prototypes may be made of any convenient material, such as clay, plaster-of-Paris or wood. Plastic models can also be made by fabrication or vacuum forming of thin sheet. Their primary function is to ensure that the product has ‘customer appeal’ when considered in aesthetic or ergonomic terms. This is particularly important for products which are to be consumer durables. It may be the first time in the design process that the concept sketches and initial engineering drawings are
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