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4.5 Endocrine disruptors

Then he was a she…

(Lou Reed, American rock singer)

In 1996, a book called Our Stolen Future was published, bringing to public attention a debate that had been simmering among biologists for some time. Written by Theo Colborn and two colleagues at the World Wildlife Fund (WWF), this book presented the hypothesis that certain industrial chemicals, commonly found as environmental pol
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4.2.5 Adverbs

Adverbs modify verbs, adjectives and other adverbs, for example runningquickly, veryclever, quitewell.

Adverbs of manner describe how the action of the verb is being done, for example boldly, graciously, well.

Adverbs of time show when the action of the verb is taking place, for example today, then.

Adverbs of place show where the action of the verb is taking place, for example here.
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Design in the Sense of Taste
We "taste"... But,how? This video shows how the tongue relates to what it tastes to the brain. The tongue also performs a task when we talk. The video talks about the salivary glands and how the tongue works. Taste buds are also discussed, how many we have, why we have this many, and where and why they were located where they are. 07:25.
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12 More information about W150 An introduction to law in contemporary Scotland

This course has been designed as a taster for the Open University's short course W150 An introduction to law in contemporary Scotland. Over six months the course covers a range of topics which introduce students to law making in Scotland, the structure of the Scottish court system, court procedure before moving on to look at some specific areas of law: Child Law, Employment Law, Human Rights and Unlawful Conduct.

The purpose of the course is to provide an overview of contemporary
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10.1 Introduction

For a variety of reasons, not least the very wide dynamic range of human hearing, the decibel (symbol dB) is often used as a unit for the amplitude of sound waves. The decibel is also used in other contexts, such as specifying the amplification of amplifiers or the degree to which a signal is affected by noise. In the context of sound, the use of the decibel as a unit captures something of the subjective impression of the way loudness changes with amplitude.

The decibel unit has
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1.5 The formation of metamorphic rocks

Any type of rock can become a metamorphic rock if it is heated to temperatures of several hundred degrees Celsius, and/or if subjected to high pressure (because of the weight of overlying rocks). During metamorphism, the minerals making up the rock become chemically unstable, meaning that their constituent ions are redistributed. The result is that either large crystals grow at the expense of existing smaller ones, or a new set of minerals is formed. Generally speaking, the overall chemical c
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2.6 Summary of Part A

The European Convention on Human Rights emerged after the Second World War. Its aim was the protection of certain individual rights. Some of these rights are absolute and there can be no exceptions (derogations), while others are qualified rights. If a right is qualified, a member state may impose legal and proportionate restrictions. The European Court of Human Rights has ultimate responsibility for the interpretation and application of the European Convention on Human Rights.


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2.3 Application of the ECHR

The ECHR places an important emphasis on individual rights whilst trying to strike a balance between individual and collective rights.

Activity 1 Drafting a charter of rights

0 hours 15 minutes

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Introduction

This free course, Squares, roots and powers, reminds you about powers of numbers, such as squares and square roots. In particular, powers of 10 are used to express large and small numbers in a convenient form, known as scientific notation, which is used by scientific calculators.

This OpenLearn course provides a sample of level 1 study in Author(s): The Open University

3.6.2 Try some yourself

Activity 36

Without using your calculator, find the following:

  • (a) 100.001 + 10.1

  • (b) 100.001 − 10.1


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4.4 Histograms and scatterplots: summary

Two common graphical displays, most frequently used for continuous data (arising from measurements), have been introduced in this section. A histogram is in a sense a development of the idea of a bar chart. A set of continuous data is divided up into groups, the frequencies in the groups are found, and a histogram is produced by drawing vertical bars, without gaps between them, whose heights are proportional to the frequencies in the groups. You have seen that the shape of a histogram drawn f
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3.2 Pie charts: Nuclear power stations

Figure 2 shows a pie chart of the number of nuclear power stations in countries where nuclear power is used, based on the data from Author(s): The Open University

3.4 Did I make a rough estimate to act as a check?

When using a calculator many people have ‘blind
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3.4 Cylinders and shapes with a uniform cross-section

An important idea when calculating volumes of simple shapes is that of a cross-section. In the case of the rectangular box considered above, it is possible to slice through the box horizontally so that the sliced area is exactly the same as the area of the base or top; in other words, the areas of the horizontal cross-sections are equal.

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2.1 Geometric shapes – triangles

This section deals with the simplest geometric shapes and their symmetries. All of the shapes are two-dimensional – hence they can be drawn accurately on paper.

Simple geometric shapes are studied in mathematics partly because they are used in thousands of practical applications. For instance, triangles occur in bridges, pylons and, more mundanely, in folding chairs; rectangles occur in windows, cinema screens and sheets of paper; while circles are an essential part of wheels, gears a
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Environment: journeys through a changing world
Genetically, mountain gorillas are amongst our closest living relatives, and also one of the world's most endangered species. Half the world's remaining population survive in the forests of Uganda. This album explores the challenges facing conservationists at Bwindi Impenetrable National Park. Known for its exceptional biodiversity, the Park became a major tourist destination when it opened for gorilla tourism in 1993. The problem is, because the Park lies in the heart of one of the most densely
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Water in Ethiopia
In Ethiopia, 65% of people don’t have access to clean drinking water. In this album we take a glimpse at the struggles Ethiopians go through each day, just to survive. We look closely at the different methods used to improve the quality of life in the rural highlands as well as the conflict between neighbouring farming villages attempting to share the same water supply. This material forms part of the course U116 Environment: journeys through a changing world.Author(s): The OpenLearn team

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Culture and Climate Change
Every generation faces challenges that previous generations could scarcely imagine. Twenty years ago, few people were talking about climate change, now it's one of the most hotly-contested areas in politics. How do artists, writers, musicians and broadcasters respond when a new subject appears that is as large and significant as this? What kind of novels, plays, paintings, sculptures, movies and music begin to emerge?Author(s): The OpenLearn team

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Studying Darwin
This course is of interest to anyone wishing to study Darwin’s theory of evolution and natural selection and how his work has gone on to influence other work around this theory. First published on Fri, 04 Mar 2016 as Studying Darwin. To find out more
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Evolution through natural selection
In this free course, Evolution through natural selection, we describe the theory of evolution by natural selection as proposed by Charles Darwin in his book, first published in 1859, On the Origin of Species by Means of Natural Selection, or The Preservation of Favoured Races in the Struggle for Life. We will look at natural selection as Darwin did, taking inheritance for granted, but ignoring the mechanisms underlying it. Author(s): Creator not set

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