Biological Diversity

							   Acid Rain       Natural
                   sources like
                   volcanoes,
                   forest fires and
                   lightning
Emissions of       strikes also
sulfur dioxide     add to the
and nitrogen       man-made
oxides react       pollution. SO2
with water         and NOx
vapor in the       become acids
atmosphere to      when they
create sulfuric
                   enter the
and nitric acids   atmosphere
                   and react with
                   water vapor.
 Scientists express the acidity of acid rain using the pH
 scale. The scale defines a solution's acidity, neutrality or
 alkalinity based on its concentration of hydrogen ions. Acids
 have a high concentration of hydrogen ions and a low pH.




Acid rain has a pH of 5.0 or less. Most acid deposition ranges
from pH 4.3 to 5.0 -- somewhere between the acidity of orange
juice and black coffee.
Global warming
The greenhouse effect happens because of certain naturally
occurring substances in the atmosphere. Unfortunately, since
the Industrial Revolution, humans have been pouring huge
amounts of those substances into the air.




 Today, human activities are pumping huge amounts of CO2
 into the atmosphere, resulting in an overall increase in
 carbon dioxide concentrations
Biodiversity
 Why is it so important?
 Man’s Impact
What are some of the ways man
  impacts the environment?

 In what ways do these things
    change the ecosystem?
         Biodiversity
            Index
      Determines the health of an ecosystem
Number of species      total number of organisms = biodiversity index

            8 different species   37 total organisms = .21

           12 different species   18 total organisms = .66


 The higher the number the healthier the ecosystem!!

     Unhealthy   .01   …………………………………..                .99    healthy