Answer: Gneiss is a type of metamorphic rock that forms when a sedimentary or igneous rock is exposed to extreme temperatures and pressure
Explanation:
<span>Although China's agricultural output is the largest in the world, only about 15% of its total land area can be cultivated. China's arable land, which represents 10% of the total arable land in the world, supports over 20% of the world's population. </span>
GPS, Glonass are the most popular
Rainwater and rivers/streams
