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!!

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

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?

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

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

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

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

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

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

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.

QR Quiz https://forms.office.com/Pages/ResponsePage.aspx?id=I5vQr0Sinky_OveSfD0RniqO1o4N6JhGo0UZldGCtsZUNU9KV1JQT0U1N1IzR0tQSTZCV0FGWVZSQS4u