Answer:
The cost of modifying tanks and engines in cars, changing fuel stations,
Explanation:
Natural gas has a higher cost because cars will need to have their engines and tanks modified to be able to use natural gas or people will have to buy a new one. Also, fuel stations will need to be changed or new ones will have o be built which is a expensive infrastructure.
They are near both Atlantic and Pacific trading routes.
Answer:
1.1 year for any small rock.
Explanation:
- As the moon is frequently hit by the asteroid that directly impacts the surface and creates creators.
- As per the question if it takes about 20 of such impacts to remove the footprints lt by the apollo moon lander.
- Then it should take about one year as the moon has no atmosphere and is exposed to the solar winds.