No.
Only indirectly ... via the sun.
Neither, because the earth's centre is composed of heavy materials not hydrogen. This is really a topic for earth scientists rather than nuclear ones, but my understanding is that the earth's heat comes from radioactive decay and residual heat from when the earth was formed, but no-one really knows all the answers.
Hydrogen makes up about 11% of the Earth's hydrosphere.
You have hydrogen heat it up it make the pistons move and the car moves.
Yes. The people would heat up more.
When alkali earth metals react with water, they produce metal hydroxides and hydrogen gas. The reaction is generally violent and releases heat.
Hydrogen is the most common element in the Earth's ocean, making up about 11% of the ocean's composition.
Yes, hydrogen is found in the Earth's atmosphere, but it is present in very small amounts. It makes up about 0.00005% of the atmosphere by volume. The majority of hydrogen on Earth is found in compounds like water and hydrocarbons.
yes, hydrogen is what makes up water and without water there would be no humans beings on the earth
Stars are mainly made up of Hydrogen and Helium. What makes them heat up and light up is the Hydrogen and Helium rapidly bouncing around in the star and hitting each other and combining, eventually creating the heat and the light.
Well, if the hydrogen weren't bonded to the oxygen, there would be no water to heat up in the first place, so I suppose the hydrogen bond is crucial to heating up water.
Hydrogen makes up about 0.14% of the Earth's crust by weight. While it is a minor component, its abundance is significant given the large size of the Earth's crust.