Answer:
The composition of the objects because not all the planets have been explored
Solar: rays from the sun shine on solar pannels creating energy which is a renewable energy.
Water: water stored at a dam flows through turbines creating energy which is a renewable energy
Fossil fuels: fossil fuels are extracted from the ground the burned to create energy and this is a nonrenewable resource.
Hope this helps :)
<span>Definition of Metallurgy-The branch of science and technology concerned with the properties of metals and their production and purification.</span>
The symbol for dinitrogen trisulfide is N2S3