On vacation at a lake, Saira's mom sees an interesting-looking rock formation Saira just learned about rocks in geology class and tells her mom that the
formation is made of gneiss, a type of metamorphic rock. How did this
metamorphic rock form?

South wales composes a lot of coal in that region.

The answer to this question is  c. pharmaceutical accumulation  reclaimed water refers to the water that being used again after it already  used for agricultural purposes.this type of water often contains pharmaceutical accumulation because of the chemical fertilizer that is used for the plants is absorbed into the water.

Answerfur trade;