1. Warm Up
With your partner, come up with a scenario that would disrupt the carbon or nitrogen cycle and explain it. Be prepared to share out!!

2. The Flow of Matter TEK 12D: TEK 12E:
Describe the flow of matter through the carbon and nitrogen cycles and explain the consequences of disrupting these cycles 
TEK 12E:
Describe how environmental changes can impact ecosystem stability

3. Biotic and Abiotic Factors
Biotic factors: Living Factors of the environment
Examples Predators, food,
Abiotic factors- the nonliving parts of an environment.
Examples temperature, moisture, light, and soil.
Can an abiotic factor such as RAIN affect many biotic factors?

4. Consumers (Heterotrophs)
Producers
(Autotrophs)
captures energy and transforms it into organic, stored energy for the use of living organisms.
Consumers (Heterotrophs)
Herbivores
Eat Only Plants
Carnivores
Eat Only Other Animals
Omnivores (That’s You)
Eat Plants & Animals
Detritivores
Feed On Dead Plant & Animal Remains
Decomposers
Breaks down organic matter
Fungi & Bacteria

5. Biogeochemical Cycles
Pre-AP Ecology
Biogeochemical Cycles
Material Cycles:
What happens to materials in a self-sustaining ecosystem? They are recycled among the biotic and abiotic environment.
The same materials can be reused.
Examples of Cycles:
Water
Carbon-Oxygen
Nitrogen
DRAFT

6. Carbon Cycle Biological Geochemical Erosion Volcanic Activity
In photosynthesis, autotrophs use CO2, water, and solar energy to make carbohydrates
Autotrophs and heterotrophs break down carbohydrates during cellular respiration (releasing CO2 & water)
Decomposers also release CO2 into the atmosphere when they break down organic molecules
Geochemical
Erosion
Volcanic Activity
Burning fossil fuels

7. Carbon-Oxygen Cycle oxygen Respiration Photosynthesis Decomposition
Pre-AP Ecology
Carbon-Oxygen Cycle
oxygen
Respiration
Photosynthesis
Decomposition
Carbon Dioxide
DRAFT

8. Nitrogen Cycle Nitrogen Cycle:
Pre-AP Ecology
Nitrogen Cycle
Nitrogen Cycle:
Organisms must have nitrogen to produce proteins and amino acids
Living things cannot use nitrogen gas in the air
Life is possible due to nitrogen-fixation
Nitrogen Fixation: Nitrogen gas is converted to ammonia
DRAFT

9. Nitrogen Cycle Nitrogen Gas (N2) Nitrogen fixation
Pre-AP Ecology
Nitrogen Cycle
Nitrogen Gas (N2)
Nitrogen fixation
Nitrogen-fixing bacteria in plant roots
Animals eating plants
Decomposition
Soil bacteria
DRAFT

10. Folder Activity
You will complete the activities in the folder with your partner.
You should be using this opportunity to discuss the information and teach each other.
After you finish the folder activity you will take a QR quiz over the information.

11. QR Quiz