Which of the following describes how metamorphic rock forms? A Tectonic plate boundaries break apart an existing parent rock. B
An igneous rock deep in the Earth is exposed to hot material. C Molten rock solidifies and hardens on top of the Earth’s crust. D A parent rock is baked and melted into liquid rock in the Earth.
<span>More than half of Africa's source of energy comes from coal. Its coal production and waste led to several environmental problems like wildfire and diseases. In one mine leak incident in Africa, last 1953 brought poison on the water supply killed thousands of marine life.</span>
