In my opinion, the correct answer among the choices listed above is option D. Hydrogenous sediment is made up of minerals that crystallize directly from ocean waters. They are produced when minerals reacts chemically with seawater.
The geographic term “Asia” was originally used by ancient Greeks to describe the civilizations east of their empire. Ancient Asian peoples, however, saw themselves as a varied and diverse mix of cultures—not a collective group. Today, the term “Asia” is used as a cultural concept, while subregion classifications describe the distinct geopolitical identities of the continent. These classifications are Western Asia, Central Asia, Southern Asia, Eastern Asia, Southeastern Asia, and Northern Asia.
I would put eater and transportation.
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.
