Which of the following is a renewable energy source

trees

coal

oil

natural gas

oil

Explanation:

oil is made by our mistakes and we make a lot of them so it is renewable

A) Trees

Option A is the Answer

Explanation:

Renewable energy sources are energy sources that are always being replenished. They can never be depleted. Some examples of renewable energy sources are solar energy, wind energy, hydropower, geothermal energy, and biomass energy.

Renewable energy sources—solar, hydro, wind, and so forth—are attractive because they are non polluting and do not require imported fuel.  

Here, among the options, trees are easily renewable compared to all other sources mentioned there. We cannot renew coal, oil or natural gas easily as it takes so many long years to accomplish it.

answer:

technetium is the most reactive. this is followed by silver. the least reactive out of these three elements is strontium.