Tennessee SPI Objective:

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SPI 0807.5.4 Biodiversity
Notes
Science
Tennessee SPI Objective Identify several reasons
for the importance of maintaining the earth's
biodiversity.
Essential Learning Students will examine and
prioritize multiple reasons for maintaining our
planet's biodiversity.
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Essential Question What is biodiversity, and why
is it important to preserve it?
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SPI 0807.5.4 Biodiversity
Science
Notes

• Biodiversity is the amount and variety of
  organisms that live in a given area at a given
  time.
• Measured 3 ways
• (1) Species Richness- Amount of different species
• (2) Evenness- Balance of the species
• (3) Genetic diversity- How closely the species
  are related
• Watch a Holt Online Visual Concept.
• Chpt 6, eActivities tab, Visual Concepts, Sect
  One, Biodiversity
• Link Holt Online Textbook Website

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SPI 0807.5.4 Biodiversity
Science
Notes
SPI 0807.5.4 (Biodiversity) Identify several
reasons for the importance of maintaining the
earths biodiversity. Here are 8 Reasons to
Maintain Biodiversity 1) To feed the world 2) To
provide more medicine 3) To maintain our
economies 4) To provide life support for our
biosphere 5) To avoid disrupting food webs 6) To
satisfy human curiosity 7) To preserve nature's
beauty 8) To respect life in all its forms
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SPI 0807.5.4 Biodiversity
Science
Notes
Reasons to Maintain Biodiversity

• 1) To feed the world
• 90 percent of the world's food comes from only 20
  plant species
• Examples Corn, Rice, Wheat, Soybeans, etc.
• If a disease or natural disaster damages or wipes
  out one or more of these crops, famine would
  result (millions could starve).
• With more varieties of these types of plants, we
  increase our chances of avoiding and/or reducing
  the impact of a famine.

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SPI 0807.5.4 Biodiversity
Science
Notes
Reasons to Maintain Biodiversity

• 2) To provide more and better medicine
• 40 of medicine prescribed in the USA comes from
  plants, animals, or microorganisms.
• With less biodiversity there is less opportunity
  to find new medicines

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SPI 0807.5.4 Biodiversity
Science
Notes
Reasons to Maintain Biodiversity

• 3) To maintain our economies
• Various plants and animals are vitally important
  parts of our national and global economies
• If some disaster were to wipe out one or more of
  these resources, tremendous financial hardship
  would result

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SPI 0807.5.4 Biodiversity
Science
Notes
Reasons to Maintain Biodiversity

• 4) To provide life support for our biosphere
• Various plants and animals provide vital services
  to life on earth
• Example Oysters filter water making it cleaner
  for other marine life
• Example Forests absorb carbon dioxide and
  release oxygen

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SPI 0807.5.4 Biodiversity
Science
Notes
Reasons to Maintain Biodiversity

• 5) To avoid disrupting food webs
• When we over-hunt or over-harvest wild plants and
  wild animals and/or wipe out species due to
  pollution and habitat destruction, we seriously
  disrupt the food chains and food webs

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SPI 0807.5.4 Biodiversity
Science
Notes
Reasons to Maintain Biodiversity

• 6) To satisfy human curiosity
• Human beings are curious about our world and life
  in general.
• People enjoy learning about nature and wildlife

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SPI 0807.5.4 Biodiversity
Science
Notes
Reasons to Maintain Biodiversity

• 7) To preserve nature's beauty
• Beautiful places with high biodiversity like
  Yellowstone park, the Smoky Mountains, and the
  Amazon Rainforest are popular places to visit.

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SPI 0807.5.4 Biodiversity
Science
Notes
Reasons to Maintain Biodiversity

• 8) To respect life in all its forms
• Even organisms that we fear or dislike also have
  a right to exist

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SPI 0807.5.4 Biodiversity
Science
Questions
Biodiversity-Question 01
Here is an example of a question you might see on
a quiz or test.
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SPI 0807.5.4 Biodiversity
Science
Questions
Biodiversity-Question 02
Here is an example of a question you might see on
a quiz or test.
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SPI 0807.5.4 Biodiversity
Science
Questions
Biodiversity-Question 03
Here is an example of a question you might see on
a quiz or test.
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SPI 0807.5.4 Biodiversity
Science
Questions
Biodiversity-Question 04
Here is an example of a question you might see on
a quiz or test.
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SPI 0807.5.4 Biodiversity
Science
Questions
Biodiversity-Question 05
Here is an example of a question you might see on
a quiz or test.