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William McGonagall was born in Edinburgh in 1830. His father was a
poor hand-loom weaver, and his work took his family to Glasgow,
then to Dundee. William attended school for eighteen months before
the age of seven, and received no further formal education. Later,
as a mill worker, he used to read books in the evening, taking
great interest in Shakespeare's plays. In 1877, McGonagall suddenly
discovered himself 'to be a poet'. Since then, thousands of people
the world over have enjoyed the verse of Scotland's alternative
national poet. This volume brings together the three famous
collections - "Poetic Gems", "More Poetic Gems" and "Last Poetic
Gems", and includes all the valuable autobiographical material
which appeared in the original volumes. It includes all his most
famous works, as well as previously unpublished poems.
Chemical Warfare in Nature Pesticides and other industrial
chemicals are at the root of many pollution problems. In view of
the toxic effects of industrial chemicals found in the water, soil,
and air, Ecotoxicology: Effects of Pollutants on the Natural
Environment considers the impact of chemicals on the environment
from a wider perspective: the evolution of plant toxins-and defense
mechanisms against them in animals as a consequence of plant-animal
warfare. Comparisons are made between this and the development of
resistance by insects towards man-made insecticides. Pesticides and
Drugs The text focuses particularly on problems posed by pesticides
and, to a lesser extent, by drugs. This material specifically
addresses the problems that pesticides pose and explores the
development of resistance to them. It focuses on the history of
pesticides, pesticide selectivity between target species and
beneficial organisms, and types of pesticides. It discusses
mandatory ecotoxicity testing as part of the process of risk
assessment of environmental chemicals. The text considers the
effects of pollutants at the population level, with respect to
changes in numbers and genetic composition. It factors in the
sublethal effects of pollutants on population levels, and cites an
increase in the concentration of persistent pollutants in natural
food chains as a cause of the decline of certain vertebrate
predators. Overall the text: * Considers plant toxins as models for
pesticides * Emphasizes principles illustrated with practical
examples * Includes a glossary of terms Divided into three
sections, this text uses a variety of examples and case studies to
examine the effects of pollutants-including naturally occurring
ones-on natural processes. It guides the reader through the basic
issues and principles; outlines the science of ecotoxicology, which
is the study of the effects of chemicals upon ecosystems; and
introduces various strategies for pollution control.
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Vets' Tips for Fanciers
Gordon Chalmers, Wim Peters, Colin Walker
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R1,223
Discovery Miles 12 230
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Ships in 10 - 15 working days
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