Page 40 - e-Learning Modul Based on ESD
P. 40

Conservation programmes are needed:
            to reduce the risk of extinction

            to protect vulnerable environments
            to provide valuable resources, such as

            food, drugs, fuel and genes.










          Plants need help too: the value of seed banks.

              Seeds can survive for long periods in a dormant state.
              Seeds of threatened plant species can be collected and stored - usually in cool,
              dry conditions.
              Conditions can be manipulated to stimulate germination of seeds when more
              plants are required.









                                                   Sustainable development is a compromise.

                                                       Requirements for wildlife must be balanced by
                                                       human demands for resources (e.g. mining for
                                                       uranium),  recreation  (e.g.  diving  around  coral
                                                       reefs) and agricultural land.
                                                       Different  organisations  -  local,  national  and
                                                       international - must cooperate.









             1 Many plants contain chemical compounds not normally found in animals.
             Explain why it is important that scientists try to conserve individual plant species
             before development of roads, housing and agriculture might eliminate them. Include
             an example in your explanation.






          31         Learning Module Organisms and Their Environment | Class 11
   35   36   37   38   39   40   41   42   43   44   45