Page 40 - E-Learning Modul 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
