Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN: 9780134580999
Author: Elaine N. Marieb, Katja N. Hoehn
Publisher: PEARSON
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Concept explainers
Question
About how much mercury was emitted by fossil fuel combustion in Asia?
A.)340 tons
B.)0 tons
C.)40 tons
D.)525 tons
Transcribed Image Text:Mercury is a naturally occurring element that is toxic to humans and other animals. Mercury that is released into the atmosphere eventually falls to Earth, where
it can enter the food chain (usually through fish and shellfish). In humans, mercury can damage the nervous system, kidneys, and other organs. Large amounts of
mercury exposure can result in memory impairment, coma, and death.
Most mercury on Earth is trapped in rocks and is released naturally through geologic processes. However, human activities are causing large amounts of mercury
to be released into the atmosphere. The increased output of these pollutants puts both the environment and humans at greater risk.
WE
In 2010, a group of scientists assessed how much mercury was emitted by nine industries from seven major geographic regions. Use the information in the graph
to answer the questions below.
Mercury emissions (metric tons)
1200
1000
800
600
400-
200
0
Asia
Africa
Waste from consumer products
Oil refining
Cremation
Waste incineration
Chlorine/lye production
Cement production
Artisanal and small-scale gold mining
Metal production
Fossil fuel combustion
(power, heating)
Russia
Europe
South and
Central America
North
Middle
America East
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