Loss of Biodiversity: How many species are endangered ?
has so few individual survivors that the species could soon become extinct overall or most of its natural range. Characteristics of Extinction-Prone Species:
-Low reproductive rate
-Specialized feeding habits
-Feed at high trophic levels
-Limited or specialized nesting or breeding areas
-Found in only one place or region
-Fixed migratory patterns
-Preys on livestock or people
Percentage of Endangered Species According to IUCN:
1996------- 34 % world’s Fish
25 % amphibians
25 % mammals
20 % reptiles
11 % bird species
2011------- 10 % World’s Fish
31 % amphibians
20 % mammals
8 % reptiles
12 % bird species
EXAMPLES OF ENDANGERED SPECIES ARE:
Coral Reefs: Camouflage Grouper (Epinephelus polyphekadion:
Giant Australian Cuttlefish (Sepia apama):Hula Painted Frog (Discoglossus nigriventer):
How should we deal with Garbage Disposal and Land Pollution?
1. Waste Management• in which we attempt to reduce the environment impact of municipal solid waste without seriously trying to reduce the amount of waste produced. What do we do with Solid waste”?
2. Waste Reduction • in which much less waste and pollution are produced and the wastes that are produced are viewed as potential resources that can be reused, recycled or composted. “How can we avoid producing so much solid waste”?
Integrated Waste Management:--a variety of strategies for both waste reduction and waste management.
54% buried in landfills
75-90% of solid waste we produce could be eliminated by combination of strategies.
change industrial process to eliminate use of harmful chemicals. use less of harmful chemicals.
reduce packaging and materials in products.-
make products that last longer and are recyclable, reusable or easy to repair....