Biodiversity, resources and energy, and the global environmental issues

The levels of biodiversity and how species are lost and protected, the difference between a sanctuary, a national park and a biosphere reserve, resources and the conventional and non-conventional sources of energy, waste management, and then the named global issues — global warming, the ozone hole, El Niño, red tides, oil spills — with migration, bioremediation and the techniques of growing plants and animals.