A Closer Look at the Animal Kingdom (Introduction to Biology - download pdf or read online

By Sherman Hollar

ISBN-10: 1615305807

ISBN-13: 9781615305803

Age variety: eight - 12 Years

Table of Contents

Introduction 6

Chapter 1 the diversity of Animal lifestyles 12

Chapter 2 category and behaviour 33

Chapter three Animals with no Backbones 50

Chapter four Animals with Backbones 61

Conclusion 75

Glossary 77

For additional info 80

Bibliography 83

Index 84

Show description

Read or Download A Closer Look at the Animal Kingdom (Introduction to Biology - Britannica Digital Learning) (1st Edition) PDF

Similar zoology books

Download e-book for kindle: Dragonfly genera of the New World: an illustrated and by R.W. Garrison, N. von Ellenrieder, J.A. Louton

Книга представляет собой прекрасно иллюстрированное и детальное руководство по систематике и экологии стрекоз Северной, Центральной и Южной Америки. Хотя стрекозы и являются одной из самых изученных групп насекомых, до настоящего момента не существовало пособия, позволяющего определять их роды или даже группы родов в Новом Свете.

The Blackwell's Concise Encyclopedia of Ecology - download pdf or read online

Offers a whole one quantity consultant to ecology offering definitions overlaying the total spectrum of natural and utilized ecological learn with over a hundred and fifty members from 15 international locations. Softcover. DLC: Ecology--Dictionaries.

Download PDF by J. E. R. Staddon: Adaptive Behaviour and Learning

Adaptive behaviour is of 2 forms in basic terms. both an animal comes outfitted by way of heredity being able to determine events within which a integrated reaction is acceptable or it has mechanisms permitting it to evolve its behaviour in occasions within which the right kind reaction can't be anticipated. Adaptive behaviour of the second one style comes approximately via average choice, which weeds out participants that determine events inaccurately or reply inappropriately.

Get Golden Wings and Other Stories about Birders and Birding PDF

Dubbed the "Bard of America's Bird-Watchers" through the Wall road magazine, Pete Dunne is aware birders and birding--instinctively and fully. He knows the compulsion that drives different birders to head out first and foremost gentle, regardless of the climate, for an opportunity to probably, simply might be, glimpse that infrequent migrant that somebody may need noticed in a patch of woods the day prior to the day gone by.

Additional resources for A Closer Look at the Animal Kingdom (Introduction to Biology - Britannica Digital Learning) (1st Edition)

Sample text

Why must a plant or animal be of direct economic benefit to humans to have worth? Economic value alone is not the only reason to preserve biodiversity. Another reason often given (but not universally accepted) to conserve biodiversity is that organisms, as components of ecosystems, provide services, and their interactions with other organisms contribute to the overall healthy functioning of ecosystems. 23 On a practical level, biologists want to know just how much the loss of a few species will reduce the quality of services within a specific ecosystem.

Few field methods have been tested for sampling caecilians, baseline distribution data for most species are poor or nonexistent, and caecilian taxonomy is inadequate. Gower and Wilkinson reported that although unequivocal declines have not been documented, some claims of caecilian declines have been made. In most cases the main cause of perceived declines is thought to be habitat destruction, although these reports are anecdotal and lack clear evidence. ” Baseline studies currently are being conducted; quantitative field studies are badly needed to assess whether or not populations of these amphibians are declining.

Harlequin frogs (genus Atelopus) range from Costa Rica south to Bolivia and eastward through the Amazon Basin into the Guyanas. Thirty of 53 species for which sufficient data are available to decipher population trends have disappeared entirely from their known Declining Amphibian Populations and the Biodiversity Crisis 8. 9. 10. 11. 12. 13. 14. 15. 16. 17 localities. Many other species have declined. 55 Populations of at least 24 species of anurans from the Andes of Ecuador have declined or gone extinct since the late 1980s.

Download PDF sample

A Closer Look at the Animal Kingdom (Introduction to Biology - Britannica Digital Learning) (1st Edition) by Sherman Hollar

by Thomas

Rated 4.85 of 5 – based on 4 votes