Across
- 3. Green house gas emissions are gases released into the atmosphere, such as carbon dioxid, that trap heat and cause global warming.
- 5. Limits in a system that prevent it from handling more demand, for example overcrowded trains or buses.
- 6. the over-reliance on a single mode of transport which leads to rigid, inefficient, and unsustainable infrastructure.
Down
- 1. Describes a process, product, or activity that requires a large amount of inputs such as time, money, labor, energy, or raw materials.
- 2. The value of the best alternative that is given up when a decision is made.
- 4. Indirect effects of an activity that affect others but are not reflected in the price, like pollution or noise.