1. Human Energy Systems Unit Activity 5.2: Energy Scenarios
Carbon: Transformations in Matter and Energy
Environmental Literacy Project Michigan State University
Human Energy Systems Unit Activity 5.2: Energy Scenarios

2. Energy Scenarios

3. Energy Use Causes Carbon to Move
Biomass
organic carbon
Atmosphere
Inorganic CO2
Before the Industrial Revolution, the atmosphere maintained a balance with the biomass pool through photosynthesis and cellular respiration.
As carbon dioxide concentrations in the atmosphere continue to rise, so will temperatures. What are the consequences of increasing temperatures for people and the planet?
However, the biomass pool can only sequester a limited amount of carbon. Today, we are adding too much CO2 to the atmosphere pool. This causes an imbalance.
Soil
organic carbon
Fossil Fuels
organic carbon
If we continue to use fossil fuels at current rates, it will be impossible for the planet to maintain its natural balance between the atmosphere and biomass pool.
When we burn fossil fuels in vehicles and buildings, we move carbon from the fossil fuel pool to the atmosphere pool.