Question

Widespread use of fuel cell vehicles poses a danger because

fuel cells emit a greenhouse gas that endangers the ecosystem.
it is hard to build fuel cell vehicles that travel slowly enough to match speed limits.
hydrogen used to power fuel cells could run out and disappear from Earth.
it is difficult to safely transport and store hydrogen gas before it is used.

Answer 1

Widespread use of fuel cell vehicles poses a danger because

it is difficult to safely transport and store hydrogen gas before it is used.

Step-by-step explanation:

A furl cell is used in a fuel cell vehicle instead of a battery.

By the use of Oxygen and compressed hydrogen electricity is generated to give power to the motor. The transportation and the process of storing hydrogen create pollutants. The primary energy which helps in the production of hydrogen is the main aspect on which the impact of the fuel cell depends upon.

Answer 2

It is difficult to safely transport and store hydrogen gas before it is used.

Step-by-step explanation:

A mixture of hydrogen gas and oxygen causes an explosive reaction. Any minimal leak would mean a fire hazard. If it was in a series of storage equipment, a single explosion would lead to a series of other explosions that would lead to a massive loss of property and possibly, life.