The Influence of Human Activity on the
Environment
Improvements in agriculture health and medicine have
produced a dramatic rise in the human population
This increase in population size leads to an increase in
pollution and higher demand for the world’s resources
Humans are using up the earth’s resources, including
fossil fuels.
Burning fossil fuels in cars and power stations produces
carbon dioxide, sulphur dioxide and other greenhouse
gases
•
carbon dioxide traps heat in
the atmosphere and causes
the temperature of the earth
to rise.
•
This leads to disruption of
the weather patterns eg
drought, floods
•
Some weeds may thrive on
the extra carbon dioxide
while other plants are killed
Sulphur dioxide will dissolve in rain producing Acid Rain
•
Acid rain damages trees and pollutes rivers and lakes.
Acid rain causes erosion of buildings
and statues particularly if they are made of limestone
Deforestation
•