ODWS icon

The Open Door Web Site
HOMEPAGE CHEMISTRY PHYSICS ELECTRONICS HISTORY HISTORY OF SCI & TECH MATH STUDIES LEARNING FRENCH STUDY GUIDE  PHOTO GALLERY
BIOLOGY HOMEPAGE  IB BIOLOGY WEB TOPIC CHAPTERS FACTS & FIGURES LABORATORY WORK QUESTIONS & QUIZZES ECOLOGY CLUB PLAYS

 

Reference chapter

Question 3
HTML version
PDF version

 

 

 

 

HUMAN INFLUENCES ON THE ENVIRONMENT

Custom Search

Question 3

The table below shows the number of endangered species in the world (figures from 1987). Study the information in the table and answer the questions which follow:

 

Group

Number of Endangered Species

Mammals

274

Birds

274

Reptiles

074

Amphibians

013

Fishes

048

Snails

003

Clams

025

Crustaceans

001

Insects

007

Plants

051

 

(a) What does the term "endangered species" mean?

(b) What can cause a species to become endangered?

(c) Choose (i) a species of mammal and (ii) a species of bird which are endangered species and explain why they are endangered.

(d) The figures in the table date back to 1987. Use the Internet to research the current numbers of endangered species.

 

Group

1987

2017

Mammals

274

 

Birds

274

 

Reptiles

074

 

Amphibians

013

 

Fishes

048

 

Snails

03

 

Clams

025

 

Crustaceans

001

 

Insects

007

 

Plants

051

 

 

(e) What can man do to help endangered species?

 

The Open Door Web Site is non-profit making. Your donations help towards the cost of maintaining this free service on-line.

Donate to the Open Door Web Site using PayPal

SITE MAP
WHAT'S NEW?
ABOUT

PRIVACY

COPYRIGHT

SPONSORSHIP

DONATIONS

ADVERTISING

© The Open Door Team 2017
Any questions or problems regarding this site should be addressed to the webmaster

© Paul Billiet and Shirley Burchill 2017

Hosted By
Web Hosting by HostCentric


SiteLock