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HUMANITY & THE WORLD BIOMES
Unit 2-1a
Understanding
Terrestrial Biomes
What Is A Biome?
Biome – A large region characterized by a specific type
of climate as well as certain plant & animal communities
Climate - The weather conditions of an area over a long
period of time including temperature, precipitation, and
humidity.
Describe the climate for a…
Desert
Temperate Forest
Why Are There Different Biomes?
Limiting Factor – An environmental factor that limits the
growth, reproduction or distribution of a species
The limiting factors in a biome are generally related to
the temperature and available water.
Biodiversity - Measures the variation within a species,
or of different species within a community
Compare the biodiversity and population density of a…
Tundra
Tropical Rain Forest
Where Are Biomes Found?
Latitude – Measures the distance north or south of the
equator in degrees
0o to 30o Latitude - Tropical Region
30o to 60o Latitude - Temperate Region
Above 60o Latitude - Polar Region
At what latitude would you expect to find a…
Savanna
Grassland
Taiga
Is There Snow At The Equator?
Altitude – Measures the height above sea level
At the base of
a mountain, such as
Mt. Kilimanjaro, there
may be thick vegetation
& high levels of biodiversity.
Continuing up the mountain, the decrease in temperature
and available water creates ecosystems that resemble
different biomes.
What type of biome would the top of
Mount Kilimanjaro resemble?
Altitude & Latitude
29,000 ft
0 ft
0o
90o
Where is the equator located in this graph?
Where are the evergreen trees located in this graph?
Identifying Biomes
Complete this chart using the terms
High, Average, Low and Seasonal.
Temperature Precipitation Biodiversity
Tropical Rain Forest
High
High
High
Temperate Forest
Seasonal
High
High
Taiga
Low
Average
Average
Savanna
High
Average
Average
Grassland
Seasonal
Average
Average
Desert
High
Low
Low
Tundra
Low
Low
Low
Biome Pyramid
Which layer(s) of the pyramid illustrate
0o, 30o, and 60o Latitude?
In which corner of the pyramid would you
find the highest amount of biodiversity?
Biomes Of The World
Color
Key
Light
Purple
Yellow
Light
Green
Brown
Light
Blue
Dark
Green
Dark
Blue
Biome
Temp.
Forest
Desert
Rain
Forest
Grass/
Savanna
Tundra
Taiga
Mountain
Close Your Notebooks… 
What have you learned in this unit?
1.How are biomes characterized?
2.What is the difference between
weather and climate?
3.What is biodiversity and what
factors can increase it?
4.How do latitude and altitude
affect biomes?
5.Name the seven primary biomes
and a place they can be found.
HUMANITY & THE WORLD BIOMES
Unit 2-1b
Understanding
The Human Body
The Human Population
Homo Sapiens live on every continent of the Earth!
What other species has such a wide distribution?
What adaptations have humans developed to survive
under such extreme environmental forces?
The Human Body
Cells – The smallest living unit that can perform all life
processes. Inside the cell are many organelles that
perform specialized functions, such as providing energy.
Which organelle contains
genetic material and is
the cell’s control center?
The Nucleus
There are over
100 trillion cells
in the human body
and each has a
special job!
Where Do All These Cells Come From?
Life begins as a single cell formed by an egg and sperm.
Five days after conception,
a single cell divides into a
few hundred cells including
many embryonic stem cells.
Stem cells are pluripotent
meaning they can form
cells with many different
purposes.
These pluripotent cells form specialized cells
that help create entire organ systems.
What Can You Do With a Stem Cell?
Without a stimulus, stem cells will divide indefinitely.
With the proper stimulus to activate the DNA,these cells
can form any of the 100,000,000,000,000 cells in your body?
What types of
afflictions could be
treated with
this technology?
Currently stem cells are tightly regulated & controversial.
Why do you think people are hesitant to
use embryonic stem cells without restrictions?
How Cells Become Tissue
Tissue – A group of similar cells that perform a common
function. There are four types…
Epithelial – Lines & protects body surfaces
Ex: Skin and stomach lining
Nervous – Carries information
Ex: The brain & spinal cord
Connective – Supports, protects
and insulates the body
Ex: Blood, fat, cartilage & bone
Muscle – Enable movement
Ex: Skeletal, smooth & cardiac
How many different types of tissue
are found in your stomach?
What Makes An Organism?
Organs – Two or more tissue types performing a specific
function. These organs make up organ systems.
There are 11 different organ systems:
Circulatory, Digestive, Endocrine, Excretory, Immune,
Integumentary, Muscular, Nervous, Reproductive,
Respiratory & Skeletal
Which organ system is shown
in this diagram?
How many organs can you
identify in this image?
The excretory system includes
the kidneys and the bladder.
What Makes A Human Being?
And so even with all of our external differences,
we are still all part of the same species.
Homo Sapiens make up all members of the Human Race.
Close Your Notebooks… 
What have you learned in this unit?
1.How do stem cells change into
specialized cells?
2.Why are people so excited
about stem cell research?
3.Why are people so cautious when
it comes to stem cell research?
4.What is the purpose for each
of the four types of tissue?
5.How many organ systems can
you name?