WARM-UP 1.Using the chemical formulas written on slips of paper in the envelop at your desk, arrange them into the correct formula for photosynthesis.

WARM-UP 1.Using the chemical formulas written on slips of paper in the envelop at your desk, arrange them into the correct formula for photosynthesis. What happens to the glucose thats been formed? 2.Now rearrange them into the correct formula for cellular respiration. What happens to the carbon dioxide thats been formed?

What happens to matter as organisms use nutrients?

Matter is cycled! Molecules are simply rearranged as they are made & broken down.

Key Terms Biogeochemical cycling Water cycle Carbon cycle Nitrogen cycle Phosphorus cycle Transpiration Assimilation Eutrophication Nitrogen fixation Decomposition

Remember when we said species are interdependent? a.k.a. Symbiosis Lion & the gazelle Strangler fig & the Oak Flower & the bee Orchid & the tree

Biotic and Abiotic Factors Are Also Interdependent 1.Living factors depend on non-living factors as a source of nutrients. 2.Non-living factors depend on living factors to cycle matter.

Organisms Cannot Exist Without Matter All living things are made of the same matter as non-living things (carbon, hydrogen, nitrogen, phosphorus, oxygen). Organisms use matter to assemble & break down essential nutrients for life.

Water Cycle Water exists in the environment as: Surface water (ponds, lakes, oceans) Run-off Precipitation Vapor

Water Cycle Water enters the biotic world through the action of: Absorption by plants (roots) Osmosis Drinking (no slurping!)

Water Cycle Water returns to the environment from the biotic world by: Evaporation Transpiration (plant stomata) Respiration (all organisms!)

Carbon Cycle Carbon exists in the environment as: carbon dioxide (CO 2 ) in the atmosphere and water deposits of coal, petroleum, and natural gas derived from once-living things dead organic matter

Carbon Cycle Carbon enters the biotic world through the action of: Photosynthesis (plants, plant-like) Chemosynthesis (bacteria) Heterotrophy (food chain) Assimilation (organisms take in nutrient for building their tissues)

Carbon Cycle Carbon returns to the atmosphere and water from the biotic world by: Respiration (producing CO 2 ) Burning (producing CO) Decomposition (producing CO 2 if oxygen is present, methane (CH 4 ) if it is not)

Nitrogen Cycle Nitrogen exists in the environment as: Nitrogen gas (N 2 ) in air Nitrates (fertilizers) Ammonia

Nitrogen Cycle Nitrogen enters the biotic world through the action of: Nitrogen fixation (bacteria convert N 2 to a fixed form) Eutrophication (too much fertilizer washes with runoff) Assimilation

Nitrogen Cycle Nitrogen returns to the atmosphere or environment by: Decomposition (bacteria, fungi) Denitrification (bacteria) Ammonification (all organisms excrete waste)

Phosphorus Cycle Phosphorus exists in the environment as: A phosphate ion (PO 4 - ) Salts & rock sediments

Phosphorus Cycle Phosphorus enters the biotic world through the action of: Absorption (plants) Heterotrophy (food chain) Assimilation

Phosphorus Cycle Phosphorus returns to the atmosphere or environment from the biotic world by: Decomposition (bacteria, fungi)

T.O.T.D. 1.How is water used by organisms? Whats it used for? 2.How is carbon used by organisms? Whats it used for? 3.How is nitrogen used by organisms? Whats it used for? 4.How is phosphorus used by organisms? Whats it used for?

WARM-UP 1.Using the chemical formulas written on slips of paper in the envelop at your desk, arrange them into the correct formula for photosynthesis.

Documents

cycle slide

nitrogen cycle nitrogen

fungi slide

tree slide

waste slide

water cycle water

phosphorus cycle phosphorus

carbon cycle carbon