D. by reducing the need for fossil fuels through the use of the ethanol biofuel
Answer:
Explanation:
Metamorphic rocks form when rocks are subjected to high heat, high pressure, hot mineral-rich fluids or, more commonly, some combination of these factors. Some examples are quartzite and marble.
For the past decade, Islamist militant groups have been gaining ground in Africa. In 2015, Nigeria’s Boko Haram became the world’s deadliest terror group. Since then, five African militaries, backed by the US and EU, have tried and failed to defeat them.