The answer is hardwood :)
STEP BY STEP EXPLANATION:
Over 90% of the hardwood demand is for the manufacture of furniture. There are also many other useful products found in Mexico's forests other than wood. Annual forestry production also includes an estimated 100,000 tons of resins, fibers, oils, waxes, and gums.
<span>South Sudan officially secedes from the north tomorrow, concluding a decades-long struggle for independence and creating the world's newest state. But the situation on the ground is far from settled. The south's secession has strained north-south relations and sparked clashes over contested territories such as Abyei. In addition, negotiators have so far been unable to agree on many points of shared economic and political policy to implement after partition.</span>
OK so All three of them produce most of their electric power by Burning coal.
