Question

1. what has been the most efficient way to travel the
world

Answer 1

The cleanest ways to travel

Bicycle: 0lb CO2 per km/0.6 miles.

Electric car (with solar panels): 0lb CO2 per km/0.6 miles.

Electric car: 0.03lb CO2 per km/0.6 miles.

International Rail (Eurostar): 0.033lb CO2 per km/0.6 miles.

Ferry (foot passenger): 0.04lb CO2 per km/0.6 miles.

Step-by-step explanation:

Answer 2

airplane,or byship(sea)

Step-by-step explanation: