The development of renewable resources has the goal of reducing greenhouse gasses in the atmosphere.
In the last decades there has been increased effects on the climate and atmosphere on our planet, and it is obvious that the reason for that are the human activities and the usage of fossil fuels and coal. Because of this people have started to develop and invest more and more into the renewable resources, thus step by step replacing the fossil fuels and coal, and protect the environment.
Despite there being no answers listed by you, which the problem seems to be a multiple choice type of question, I'll go ahead and take a stab here.
What this problem is describing is basic nuclear fusion. Nuclear fusion is the process of which energy is released by a combination of two elements after they form into a brand new element. Once this happens, the bonded atoms have formed into a new, heavier nucleus.
<span>The Anti-Apartheid Movement</span>
The crust moves across the mantle