GE ELEC (CHAP 2)

• Biocentrism - belief that humans are part of nature is known as ______
• Ecosystem “a dynamic complex of plant, animal and microorganism communities and their non-living environment interacting as a functional unit.
• Food Web is a network of interconnected food chains. It comprises of all the food chains within asingle ecosystem. It helps in understanding that plants lay foundation of all the food chains.
• What Keeps Us and Other Organisms Alive? ➢ Life is sustained by the flow of energy from the sun through the biosphere, the cycling of nutrients within the biosphere, and gravity.
• Energy flows - Energy cycles in ecosystem involve the flow of energy and nutrients from various sources. The sun provides the energy for plant life which is used for photosynthesis. The food chain consists of producers, consumers, and predators. Scavengers break down dead matter, while reducers absorb and release energy, allowing molecules to be reused by producers.
• The food chain consists of producers, consumers, and predators.
• Key Elements of Nutrient Cycling: Water Cycle, Carbon Cycle, Nitrogen Cycle, Oxygen Cycle, Phosphorus Cycle, Sulfur Cycle