Biosphere The biosphere is the outermost part of the planet’s shell — including air, land, suface rocks, and water — within which life occurs, and which biotic processes in turn alter or transform.
Biome a biome is a major regional group of distinctive plant and animal communities best adapted to the region's physical natural environment, latitude, elevation, and terrain. Examples of biomes include the desert, rain forest, artic tundra, grassland, coniferous forest, decidious forest, and oceans.
Ecosystems All the biotic (living) and abiotic (nonliving) factors that will INTERACT with each other in some subset of the biosphere. Abiotic factors: soil, water, temperature, elevation, and location on the earth.
Energy Flow Sun major supplier of the earth’s energy. Most of the energy released is lost in the form of heat.
The Flow of Energy Producers - Plants capture the sun’s energy and store it in food Primary Consumers (herbivores) - Animals that receive their energy directly from plants Secondary Consumers (carnivores) - Consumers that feed on primary consumers Energy flows from the sun to the producer, then to the primary consumer, then to the secondary consumer, third level consumers, forth level consumers, etc...
Pyramid of Numbers Carnivore populations are smaller in comparison to the rest of the ecosystem. They require more food to sustain their lives than the lower organisms. The amount of useable energy that is transferred from trophic level to trophic level only 10%.
Let’s Practice How many trophic levels are present? 5 Determine the amount of useable energy for the different trophic levels. Level 2: 35 J Level 3: 3.5 J Level 4: 0.35 J Level 5: 0.035 J
Food Webs Many food chains interacting with each other. The arrow always points away from the organism being eaten to the organism doing the eating. Shows the movement of energy and matter in an ecosystem.