Ecosystem Cycles Neither energy or matter is created or destroyed It is cycled through an ecosystem

Carbon-Oxygen Cycle Photosynthesis and respiration cycle Carbon and Oxygen atoms through an ecosystem Consumers die → decomposers give off CO2 Consumers die → heat, pressure, time → become fossil fuel (coal, oil and natural gas)

Water Cycle Evaporation – process by which water changes from a liquid into an atmospheric gas Transpiration – loss of water from a plant through the stomata in its leaves Condensation – process by which water changes from an atmospheric gas into a liquid Precipitation - rain, sleet, hail, snow and other forms of water falling from the sky

Nitrogen Cycle N2 in air ( 80% of the atmosphere) organisms cannot use Nitrogen fixing bacteria convert N2 into a usable form →plants use to grow LEGUMES (beans, alfalfa) nodules contain bacteria that can take atmospheric N2 and convert it to usable nitrogen Animals obtain nitrogen from the plants they eat and return it to the soil in their stool.

Phosphorus Cycle Erosion releases phosphorus from rocks into the surrounding soil Phosphate in soil can either: Be used by plants Leach (drain away from soil) into the water Animals receive nutrients by eating the plants Decomposers return phosphorus to the soil Phosphorus in water will be used by aquatic plant or settle in sediment that forms new rocks

ATP Cycle ATP (Adenosine Triphosphate) = The only usable energy form. To release energy one of the bond between one of phosphate atoms is broken Phosphate is released Produces ADP (Adenosine Diphosphate) = the uncharged form A phosphate must be added back to the ADP molecule to recharge it and make a new ATP molecule

+ ATP (Fully Charged) ADP (Uncharged)

HOMEWORK: Ecosystem Cycles Notes Assignment: YOUR CHOICE!!!