Most street lights are made from one or two elements mercury or sodium. explain why astronomers preferred that cities you sodium streetlights instead of mercury streetlights

Astronomers prefer that cities use sodium street lights because the emission spectrum of sodium produces fewer lines than the emission spectrum of mercury

Explanation:

probably not if net force is zero

here are some information of the future of geothermal energy:

-the future of geothermal energy can pretty much be summed up with a single word: more

-scientists plan in going deeper than 120 meters

-we are hoping that one day, we will get all of our energy from renewable energy sources such as geothermal energy

hope this !