Download Challenge Questions:

Challenge Questions:
What four elements make up most living matter?
What are the four main types of biological molecules?
What are the patterns of chemical cycling?
organic molecules –
inorganic molecues –
What are the roles of:
producers
consumers
decomposers
Reservoirs of carbon (forms)
 Atmosphere – carbon dioxide (CO2)
 Living matter – carbohydrates, lipids, proteins, nucleic acids
 Water – bicarbonate (HCO3-)
 Rocks - oil, coal, natural gas CH2O , limestone (CaCO3), dolomite (MgCO3)
Usable forms for life
 Carbon dioxide (autotrophs only)
 Biological molecules (autotrophs and heterotrophs)
Processes in the carbon cycle
 Cellular respiration – converts carbohydrates to carbon dioxide and water
(&ATP)
 Photosynthesis – converts carbon dioxide and water to carbohydrates (&
oxygen)
 Combustion – converts hydrocarbons to carbon dioxide and water (&
other pollutants)
 Decomposition – converts carbohydrates to carbon dioxide and water (& ATP)
 Dissolving – converts atmospheric carbon dioxide to bicarbonate
 Geology (pressure and time) – converts calcium carbonate to limestone and
carbohydrates to coal (etc.)
Reservoirs of water (forms)
 Salt water
 Ground water
 Glaciers/ice caps
 Fresh water
 Atmosphere
 Living matter
Usable forms for life
 Liquid/gas
Processes in the water cycle
 Evaporation – liquid to gas
 Condensation – gas to liquid
 Precipitation – rain, snow, hail, mist, etc.
 Runoff – precipitation that flows off land and into waterways
 Infiltration – precipitation that filters into the ground
 Transpiration – plants take water from the soil that evaporates from the leaves