SCI L5

• biogeochemical cycle

  • how nutrients and energy flow through an ecosystem
• biotic - living things w/ an ecosystem
• abiotic - non-living components
• the water or hydrologic cycle

  • movement of water from the various places where it is stored within the earth
• evaporation - liquid to vapor
• transpiration - plants release water vapor from their leaves
• condensation - water vapor to liquid water
• precipitation - clouds release rain or snow -> falls back to the surface