Warm Up 9 3/24 Energy pyramids show the amount of _________ at each trophic level. Only _____% of energy available in one trophic level is transferred to organisms at the next trophic level The rest of the energy is released as _________. 4-7 Fill in the blank

Most common elements of LIFE Hydrogen (H)- 59% Oxygen (O)- 24% Carbon (C)- 11% Nitrogen (N)- 4%

How does matter move among the living and nonliving parts of an ecosystem? Matters recycle within & between ecosystems in biogeochemical cycles One way flow of energy

Nutrient Cycles Nutrient: chemical substance that an organism needs to sustain life Carbon Nitrogen - Phosphorous

Stored in: Atmosphere, Oceans, Underground Carbon Cycle Key ingredient of living tissues, found in rocks, component of animal skeleton, carbon dioxide gas Stored in: Atmosphere, Oceans, Underground

Nitrogen Cycle Makes amino acid used to build protein Makes up 78% of atmosphere Stored in: Atmosphere, soil, tissue of animals

Nitrogen fixation- bacteria in the soil and on roots of plants called legumes convert nitrogen gas into ammonia Denitrification- Soil bacteria convert nitrates into nitrogen gas

Why is nitrogen cycle important? Human activity add an abundance of nitrogen Acid rain Nitrous oxide destructs ozone Waste water Algal bloom

Nutrient Limitation When nutrients are scarce and cycle slowly Primary productivity: rate at which organic matter is created by producers When nutrients are scarce and cycle slowly Large input of limiting nutrient can also happen. What is an example?

Stored in: Land, Atmosphere, Ocean Water Cycle Stored in: Land, Atmosphere, Ocean