The rationale for wildlife conservation (Knowledge and understanding…
The rationale for wildlife conservation
Knowledge and understanding
Interdependence of life on Earth
Aesthetics and recreation
Development of new medicines
Few varieties of commercial crop species grown.
Each variety uniform genetically.
Breed new desirable characteristics using wild varieties
Gene pool problems
Disease-resistant rice and potatoes
New food species
Indigenous species usually better adapted.
1500 plant species in Spinach family.
Grow well in salt-rich soils.
Selective breeding - enhance desirable characteristics
Papua New Guinea:
250 plant species with edible fruit.
Fewer than 50 currently cultivated.
Other material resources
Earth's life-support systems