Please enable JavaScript.

Coggle requires JavaScript to display documents.

what is the importance of biodiversity? (loss of biodiversity (why do…

- - - - in diverse environment, if one species is affected in some way, others not affected can take its place. eg, farms with just one kind of crop, such as wheat, can be completely destroyed by disease or pest. with diversity of crops, some will not be affected. diversity of crop species therefore ensures stability
    - - bacteria in soil attack dead organisms, such as this tree(pg 121), and break them down into simpler substances. the substances provide nutrients which plants need in order to grow. bacteria keep environment stable and healthy
    - - fishing waters of alaska contain variety of species of salmon. although species of salmon caught changes from year to year, total catch of all species is almost same. diversity of salmon species ensures that fishing waters remain stable and healthy
    - - animals need oxygen for breathing. during photosynthesis, green plants absorb carbon dioxide. at same time, plants produce oxygen that animals that animals need for breathing. with many trees and forests, supply of both gases in atmosphere remains stable
- - - - habitat loss
        
        habitat is natural home of organism. common cause of habitat loss is destruction. this results in loss of forests, home to many plants and animals
        
        pg 122
      - invasive species
        
        many species are endangered by invasive species, that is, organisms that do not normally live alongside native species
        
        pg 123
      - diseases
        
        can kill plants and anima;s, and cause them to become endangered
        
        pg 123
      - hunting
        
        people hunt and kill animals for food. they also hunt animals for body parts
        
        because of overhunting and overfishing, many animals are now endangered and may soon become extinct
        
        pg 124