Question

10 multiple choice 2 points the most energy - efficient vehicles available today are cars with gasoline engines. cars that use biomass fuel. fuel cell cars. hybrid cars. 11 multiple choice 2 points geothermal heat pumps can heat homes by circulating fluid underground to absorb heat from earth. all of the above. using underground rivers to turn a small turbine. pumping hot water or steam from deep underground.

Explanation:

1. Fuel - cell cars convert fuel to electricity efficiently.
2. Geothermal heat pumps circulate fluid to absorb Earth's heat.

Answer:

1. fuel cell cars.
2. circulating fluid underground to absorb heat from Earth.