Food Webs A system of interdependent food chains Food Chain Hierarchical series of organisms each dependent on the next as a source of food

Levels of Consumption

Extinction

Organism that takes resources away from a native (natural) species. Invasive Species winter spring Organism that takes resources away from a native (natural) species. summer fall

An invasive species is a plant, fungus, or animal that is not native to a specific location, and that has a tendency to spread to a degree believed to cause damage to the environment

Which has more biodiversity?

Bio = “life” Diversity = “variety” Biodiversity Bio = “life” Diversity = “variety” Biodiversity is the variety of life on Earth and the essential interdependence of all living things.

Biodiversity...Why is it important??? “At least 40 per cent of the world’s economy and 80 percent of the needs of the poor are derived from biological resources. In addition, the richer the diversity of life, the greater the opportunity for medical discoveries, economic development, and adaptive responses to such new challenges as climate change.” The Convention about Life on Earth, Variation of genetic codes…. Resistance to disease… Medical Discoveries…