1. Which change is a cause of the other three?
(1) increased fossil fuel consumption
(2) destruction of the ozone shield
(3) increased industrialization
(4) destruction of natural habitats

2. To understand what fossil fuels are, we need to begin from the beginning…

3. Where does your ENERGY come from?
Energy originates with the sun Plants capture solar energy-- photosynthesis This requires light, H2O, CO2, and lots of enzymes & pigments. Let us try to understand how…

4. Light energy is stored here!
Leaves are the organs of photosynthesis.
Chloroplasts are organelles in the leaf cells where photosynthesis occurs.
Glucose
Light energy is stored here!
CO2 + H2O + Sunlight C6H12O O2
Enzymes
Pigments

5. Light energy comes in many colors

6. Light energy comes in many colors
Red & Blue are the most important colors for photosynthesis.

7. Light energy comes in many colors
Red & Blue are the most important colors for photosynthesis.
Can you guess which color of light plants CANNOT USE for making glucose?

8. Green light is not useful for photosynthesis
Green light is not useful for photosynthesis. That’s why plants appear green!

9. The diagram represents processes that occur in the chloroplasts of plant cells.

10. So, about fossil fuels…
Some plants (and animals) will die, get buried, and their “remains” become fuel for us.

11. CO2