Answer: Gneiss is a type of metamorphic rock that forms when a sedimentary or igneous rock is exposed to extreme temperatures and pressure
Explanation:
“Total cost of all factors of production consumed or used in producing a good or service. ... Market price: Market price is the price at which a product is sold in the market. It includes the cost of production in the form of wages, rent, interest, input prices, profit etc”
The best answer is reduction in acid rain.
Acid rain is rainfall which has been rendered acidic by pollutants in the atmosphere. This kind of rain is typically harmful to forests and lakes.
The main cause of acid rain is human activities. The burning of fossil fuels such coal in electrical generating plants and crude oil products such as gasoline and diesel in car engine releases sulphur dioxide and nitrogen oxide into the atmosphere.
These compounds mix with water very high up in the atmosphere and form acid pollutants which fall on the ground as acid rain.
Use of clean energy will eliminate burning of fossil fuels and thus no acid rain will be produced.
Formation of groundwater i think
Answer: A
Explanation:
roman empire founded - 27 bce
olmec founded - 1200 bce
egyptian empire collapse - 310 bce
maya collapse - 900 ad
