1. Energy Flow Review Snake Frog Insect Plant
Energy flows in a one-way path.
Matter is recycled within and between ecosystems
Matter is neither lost nor created it merely changes form

2. Cycles of Matter
Every living organism needs nutrients (carbs, lipids, protein, nucleic acids) to build tissues and carry out essential life functions

3. The Water Cycle
Water vapor condenses into tiny droplets that form clouds
Condensation
Precipitation
Water returning to the Earth’s surface
Process by which water changes from liquid to an atmospheric gas
Evaporation
Runoff
Groundwater
Water that seeps deeply into the soil

4. Like water, nutrients are cycled through biogeochemical activity
Nutrient Cycles
Like water, nutrients are cycled through biogeochemical activity
When an ecosystem is limited by a single nutrient that is scarce or cycles very slowly, this substance is called a limiting nutrient.
Examples: Nut & Bolt and Hotdog & Bun

5. The Carbon Cycle
Atmospheric Carbon

6. The Nitrogen Cycle
Denitrification: Conversion of nitrates into nitrogen gas
Plants
Consumer
Nitrogen fixation:
Conversion of nitrogen gas to ammonia
Nitrates
Nitrites
Nitrogen is required to make amino acids, which build proteins & for Nucleic Acids

7. The Phosphorous Cycle
Producers
dissolves
In the ocean
Consumers
Phosphorous is an essential part in forming DNA and RNA.