Which of the following is/are a nonrenewable source of energy that can be used to produce electrical energy? A. nuclear reactions B. wind C. solar energy D. all of these

a

Explanation:

nuclear reactions are in fact nonrenewable and they are a source of energy

and the materials used to produce needs rare materials

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lunar landing mission. apollo 11 was the first manned mission to land on the moon. the first steps by humans on another planetary body were taken by neil armstrong and buzz aldrin on july 20, 1969. the astronauts also returned to earth the first samples from another planetary body.

explanation:

before, trains worked using the steam engine. thus, it uses heat so it is crucial to apply heat balance. the steam engine absorbs energy during the stage of boiling water. so, this is the endothermic reaction. when the steam is used to work the piston, it has to release this energy through running the train. the excess energy is released as an exhaust to the chimney. this is the exothermic process because it releases energy to the surroundings.