Warm-up: HSA Practice Book Pages: 1-5

Agenda Warm Up Ocean Acidification Video Clip: https://www.youtube.com/watch?v=Wo-bHt1bOsw Biogeochemical Cycle Diagrams using Textbook. Cycles Video Review https://youtu.be/XhR1IEbEops Partner Work Practice Half Sheet Closing HSA Practice for Ecology or from Website

Biogeochemical Cycles Carbon cycle Nitrogen Cycle Water Cycle

Carbon Cycle 1. Plants take in carbon dioxide during photosynthesis and use the carbon to build carbohydrates. 2. Organisms release carbon in the form of carbon dioxide gas by respiration. Carbon is a major component of all organic compounds, including carbohydrates, lipids, proteins, and nucleic acids. 3. When organisms die, decomposers break down the bodies, releasing carbon to the environment. Ocean Acidification Video Clip: https://www.youtube.com/watch?v=Wo-bHt1bOsw 4. Geologic forces can turn accumulated carbon into carbon-containing rocks or fossil fuels.

Nitrogen cycle Nitrogen Cycle Animation: All organisms require nitrogen to make amino acids, which are used to build proteins and nucleic acids, which combine to form DNA and RNA. Bacteria convert N gas into ammonia, nitrites, nitrates – nitrogen fixation Primary producers use those molecules to make proteins, DNA Consumers eat the primary producers and take the Nitrogen to make their own proteins and DNA 4. Decomposers release the Nitrogen from decaying organisms back to the soil 5. Bacteria in soil start the process over again Nitrogen Cycle Animation: http://www.mhhe.com/biosci/genbio/tlw3/eBridge/Chp29/animations/ch29/1_nitrogen_cycle.swf

Water Cycle Water enters the atmosphere in a variety of ways: Condensation: Water molecules gather in clouds, then rain or snow down Evaporation: Water leaves bodies of water in a gaseous form Transpiration: Water exits through leaves of plants ** Water can also runoff the land into lakes, rivers, oceans

Word Bank CO2 (x 2) O2 (x2) Light H20 (x 2) C6H12O6 (x 2) ATP/Energy