- Photosynthesis: The process in which organisms use water along with sunlight and carbon dioxide to make their own food.
- Respiration: The process by which cells break down simple food molecules t release the energy they contain
- Food web: A pattern of overlapping food chains in an ecosystem
- Solar Energy: Energy from the sun
- Carrying Capacity: The largest population that an area can support.
- Urban Sprawl: A city that laterally grows outward