Power plants use flue gas desulfurization equipment. what is another name for this equipment and what does it do to reduce the impact of coal use

Scrubbers is another name for Flue gas desulfurization equipment. Flue gas desulfurization equipment reduce the impact of coal use by removing sulfur dioxide in flue gas from fossil-fuel power plants and from the emissions of other sulfur oxide emitting processes. Power plants use flue gas desulfurization equipment to remove impurities such as sulfur, nitrogen oxides and other particulates from smoke before it goes away from their smokestacks.

the real answer is b. scintillation counter

the correct answer is 4) heat and pressure

metamorphic rocks arise from transformation of existing rocks types, in a process called metamorphism. during metamorphism the original rock(prolith) change into metamorphic rock by heating (150-200c) and pressure of more than 1000 bar. the original rock can be sedimentary, igneous, or existing metamorphic rock.